(8) The Mammoth Rocks site sits adjacent to one such corridor, the lower Russian River Valley. Dietler 2003; Heizer and Kelley 1962; ONeil 1984; Pitzer et al. (7). Mammoth Trumpet 16(4). Sometimes you can see whales migrating while you're climbing.". boulder ranger district road status sont l pour vous conseiller sont l pour vous conseiller I suspect that Ice Age mammoth and bison had similar practices to their modern-day counterparts. Near the Triangles center are found three rock pinnacles known as Harding, Shag, and Arch Rocks. Contemporary rubbing rocks are typically associated with the bathing and grooming behavior of megafauna. Thus, for the time being, my proposals regarding both microblade technologies should be viewed with extreme caution. The chert flakes found in the topsoil were brown and gray in color, and came from elsewhere in the area.Drs. 2443 (24 October 1941), pp. (The photograph of the Nun's Canyon Quarry below was contributed by the owner . Check out our sonoma county rock selection for the very best in unique or custom, handmade pieces from our shops. However, during the late Pleistocene, all three rocks were exposed. This has allowed me to regularly inspect the subsurface stratigraphy of a 5-km transect traversing the same area that I propose to have once been characterized by a major north-south game trail. The single deep excavation unit revealed quarry debris to 220 cm, and several possible hammerstone spalls were found at 200-220 cm. The use of this north-south corridor by the megafauna would have allowed for easier movement and quicker access to choice locations on the prairie. Additionally, Dr. Christopher Chippendale of Cambridge University visited the Mammoth Rocks site as did a large tour group from the 2003 International Quaternary Association (INQUA) conference in Reno, led by Dr. Carol Prentice of the U.S. Geological Survey.Closer to home, Gary Shannon of California State Parks discovered a rubbing rock in the coastal range overlooking the Mammoth Rocks site. Since the initial discovery of the Sonoma Coast rubbing rocks, a loose-knit team of researchers (including archaeologists, geologists, paleontologists, geomorphologists, pedologists, physicists, chemists, zoologists, botanists, and molecular biologists) have been working with me to confirm or deny the Rancholabrean Hypothesis. Near Indian Head Hill in San Diego County is a deposit of fine-quality hessonite garnet, and another deposit is near Dos Cabezas. You keep gaining the ability to climb higher walls and bigger mountains.". At that time, the Mammoth Rocks and Jasper Rock sites sat at the back of a broad coastal plain, most of which is now inundated. At least, that is what the model suggests may happen. Included among the artifacts are a few blade-like flakes with edge wear (Fig. If the Coastal Migration Model (Dixon 1999; Fladmark 1979) has merit, as Californias linguistic diversity and recent archaeological discoveries on the states South and Central Coasts (e.g., Johnson and Morris 2002; Jones et al. Current Anthropology 44(4):580-591. A short trek down a sharply descending road leads to the beach. Check out our page onSustainable Travel, and look over theLeave No Trace Seven Principles. The best places to rockhound in Central Washington are the sands and gravels of the many regional rivers and streams, as well as select mountainsides and hillsides. West Coast Archery Shop, 2040 Petaluma Blvd. At 1.2 million ha, the combined Farallon PlainFranciscan Valley ecosystem was approximately 1/8 the size of todays Serengeti-Mara ecosystem in East Africa. . 2002c Evidence of Rancholabrean Rubbing Rocks on Californias North Coast. Like the rocks of the Alcatraz Triangle, it would have offered large predators and Paleoindian hunters-scavengers an ideal cover for monitoring and ambushing prey. The rocks are located on the coast of Sonoma County about 75 km north of San Francisco, within Sonoma Coast State Beach, a unit of the California State Park System. Be sure to confirm the land status and collection rules before you travel to an unfamiliar location or collect any material. QMT1 (estimated to be about 516,000 CALYRBP) has not been mapped in this area, but is known further south near Bodega Bay. That means new rock formations are constantly revealed. If Paleoindians populated the Sonoma Coast, it seems likely that they would have made great use of the interior edge of the coastal plain. On the other hand, should the model be confirmed, we may have another tool for helping locate the evidence left behind by the areas first pioneers. During that time, I worked with Lawrence Tobacco, a distinguished Northern Cree elder, who was interested in the relationship of the rocks to the former buffalo-hunting cultures of the Plains. Lincoln - Mozarkite, Jasper, Chalcedony. If correct, there would have been one large predator (e.g., sabertooth cat, California lion, dire wolf, American short face bear, etc.) rebels basic training event tier 3 walkthrough; sir charles jones net worth 2020; tiktok office mountain view; 1983 fleer baseball cards most valuable thesis, University of California, Los Angeles. Andesite and rhyolite flow rocks, greenstone, volcanic breccia and other pyroclastic rocks; in part strongly metamorphosed. Mesozoic volcanic rocks, unit 1 (Coast Ranges) (Jurassic to Cretaceous) at surface, covers 4 % of this area. However, they are more likely associated with the proposed middle-late Holocene technology. Permits are available now. The 11 . Always double check that your Sonoma County big game hunt is registered and in good standing with the state. That creates the possibility for the discovery of fantastic finds for rock hounders. Thus, the Franciscan Valley of the late Pleistocene measured approximately 500,000 ha while the Farallon Plain was at least 700,000 ha is size. 300m and park. Dietler, John Eric2003The Specialist Next Door: Microblade Production and Status in Island Chumash Households. (1) These are features that I believe were used for grooming by now-extinct Ice Age megafauna such as Mammuthus columbi and Bison antiquus. Dixon, E. James1999Bones, Boats, & Bison. Written by Sonoma Insider Suzie Rodriguez. The more than 55 miles of shoreline that make up Sonoma County's western border are rugged, dramatic, unbelievably scenic, and quite diverse. The beach contains a great selection of jasper, chert and agate pebbles -- great for rock-hounds and psammophiles. Surovell, Todd A.2003Simulating Coastal Migration in New World Colonization. Dead Generation. (6) The plain was likely endowed with a rich growth of perennial grasses resulting from the complex grazing-browsing-trampling regime of the Rancholabrean megafauna (Edwards 1991:4). Further north, on the Northwest Coast and in Alaska, the microblade-making cultures of the much earlier (ca. We do not allow road hunting and we limit our take to 3-points or better through the entire season. Center for Archaeological Research at Davis. Hunting in California, Sonoma county Contact info network of Hunting Clubs and Hunting Ranches Public Lands, State Hunting areas Fishing and Camping Access to Great Hunting and Fishing Maps FREE List of 500 + Public Refuge Hunting lands, Fishing and Hunting Clubs,WITH MAPS, for hunting in California and Oregon Thus, if my hypothesis is accurate, many of Californias vernal pools were born of abandoned wallows at the dawn of the Holocene. San Bernardino County Fish and Wildlife Service, Region 1, Portland, Oregon. The Sonoma Coast specimens have relatively low length-width ratios and are characterized by steep edge angles. 2003aAn Hypothesis Regarding the Paleoecology of the Late Pleistocene San Francisco Bay Region. One of our main crags is Sunset Boulders at Goat Rock Beach - two house-sized boulders and some smaller ones that offer great climbing, right on the continent's edge. Miller, Frances J.1988An Archaeological Investigation of CA-LAK-589, Anderson Marsh State Historic Park, Lake County, California. There's no end point. I believe that is worth the risk of being proven wrong. 2716 (17 January 1947), p. 65. Fremontia 27(4) and 28(1):28-37. Swartz, B.K., Jr.1959Microblade Manufacture in the Santa Barbara Channel Region. 2001) suggest, the Sonoma Coast should have offered abundant resources for early Paleoindians in the late Pleistocene. (13)To date, I have located at least three archaeological sites along the survey transect where artifacts eroding from the coastal bluffs (from the subsoil at depths of 50-150 cm) appear to suggest a considerable antiquity (> middle Holocene?). It's true, Sonoma County is an antiquing wonderland. We have 29 vendors who are excited to see you. Edwards, Stephen W.1991Observations on the Prehistory and Ecology of Grazing in California. 1960Blade Manufacture in Southern California. Science (New Series), Vol. Rock hunting on Lake Michigan can be very satisfying as you may find agates, corals, quartz, or obsidian. The rocks are located on the coast of Sonoma County about 75 km north of San Francisco, within Sonoma Coast State Beach, a unit of the California State Park System. Meyer will also conduct flotation analysis of a column sample I excavated at Mammoth Rocks in fall 2002. 21. For example, African elephants wallow at waterholes in order to coat themselves in mud, then, as the mud dries, they rub it off against a hard object, often a large boulder. Furthermore, by identifying these Pleistocene features, it may be possible to map the archaeological presence of the areas first people. Also, take note that there are no showers at Wrights Beach. (10) This trio of rocks commanded an area where the trail corridor narrowed down as it approached the Golden Gate. Ranch also available during this time to hunt Black Bear. At the northern edge of San Pablo Bay, the Napa, Sonoma, and Solano County tidal marshes have changed from an area once over 90 square miles to less than 50,000 acres presently. 5 The deep excavation unit is sited immediately adjacent to the quarried boulder and in an area where large blocks of the outcrop were knocked or pried off (see Fig. 1-25 of 284 Listings Sort 114 Acres Rock County 114 Acres Rock County $299,900 - 114.93 Acres - Beloit, WI Aaron Dobbs Aaron . Paleoenvironmental Reconstruction of the San Francisco Bay Area. Boron. 17 Not to be confused with the current Lakeside County Park near Kelseyville. The information provided in this article by YesDirt.com is for informational purposes and is subject to change. The owner of Santa Rosa's Vertex Climbing Center, he's trained some of the best climbers around, and he's passionate about the challenges, benefits, and all-around fitness inherent in the art of climbing. The rivers and streams of this part of the state are also very popular for gold panning . However, the Scientific Method does not require that the hypothesis be confirmed. >9,000-<8,500 CALYRBP), a regional variant of the APT, extended as far south as Oregon (ibid:178). (4) It is possible (but certainly not proven) that the cultural component (or components) found between 100-180 cm at Jasper Rock is contemporaneous with the early Holocene occupations at nearby Duncans Landing Rockshelter. In: Vernal Pool Plants: Their Habits and Biology, Diane H. Ikeda and Robert A Schlising, eds., pp. SCSB-03-2: L, quartz thumbnail scraper; M, chalcedony side scraper (has polish on edge at bottom of image). Visit our dig at Lake Henshaw Resort where you will dig and screen through ore from the world famous Himalaya Mine. We offer a fun gem and crystal dig to the public. The repeated use of the wallows by the megafauna would have prevented the California flora from colonizing the depressions for any length of time. Ranging from approximately 20-48 km in width, the prairie may have surpassed 300,000 ha in size. Gator Girl Rocks includes rockhounding information for all 50 states as well as the District of Columbia. However, more flakes were recovered in the excavation units sited further away from this area. The rocks you will find here range from bluechist to serpentine. Here and there an irregular calcite veinlet as much as 3/8 of an inch wide cuts the rock." Glen Ellen, Sonoma County, California - Nun's Canyon Quarry, Inc. (present-day company) 12201 Sonoma Highway, Glen Ellen, CA 95442; (707) 996-3762; Harold Weise, owner. 95-103. Reported as developed and closed to collecting. Studies from the Herbarium, California State University, Chico, Number 8. 1985:265-266). Pitzer, Jean M., Thomas R. Hester, and Robert F. Heizer1974Microblade technology of the Channel Islands. Clubs. Modern Rockhounding and Prospecting Handbook $20.11 A must have for every serious rockhound! Fladmark, K.R.1979Routes: Alternative Migration Corridors for Early Man in North America. Chin, J.L., P.R. During the late Pleistocene, this corridor passed through what I term the Alcatraz Triangle, an area located just inside the Golden Gate and bounded by the Golden Gate, Angel Island, and Alcatraz Island. Tom Origers fall 2004 fieldclass will return to the site, and by the end of this year, we hope to have a better idea of what is to be found in the deeper depths of the site. It was hard to find a team or the construct of a game to play.". 3Q, R, S). Dr. Stephen Norwick of the Dept. Recreation Hunting Hunting Opportunities Type C: Lake Sonoma Wildlife Area does not require the purchase of a hunting pass for entry. Rockhounding Around The WorldScience QuestionsLearn About Different Kinds of Rocks, About UsPrivacy PolicyTerms Of UseArchives, Exploring Santa Barbara County For Rock Hunting, Rock Collecting In El Dorado County, California, Rockhounding Near San Francisco, California. Among the most lovely campgrounds youll ever see. A shellmidden (CA-SON-365/H) is located 100 m south of the boulder. Cambridge: Cambridge University Press. College Station, Texas: Center for the Study of the First Americans. They will work with samples from both Jasper Rock and Mammoth Rocks. The excavated sample will be subjected to flotation analysis. I found a team of molecular biologists to initiate the required in-depth research, but they were unable to follow through with the project. Finding additional bladelets at Jasper Rock suggests the presence of a microblade technology. Anonymous1998Jepson Prairie Preserve Handbook. 94, No. It is likely that some bison herds and others moved from the Central Valley west through the Carquinez Strait and the Golden Gate to the coastal plain and back. Because todays narrow coastal terrace is all that remains of the broader coastal plain of the late Pleistocene, it is one of the best places to search for Paleoindian evidence. CA-NAP-58: Q, obsidian microblade; R, obsidian microblade; S, obsidian microblade, 35 mm long. One area of interest within the Triangle is revealed by bathymetric data. The ranch has easy access to CA HWY 1 and is only 60 miles to San Francisco. However, given the difficulty and depth of the excavation, we may not have many answers until next year. It occupies a bench that may possibly (albeit unlikely) correlate to Quaternary Marine Terrace 1 (QMT1). Southwest Missouri State University, Springfield. The City 2. Unfortunately, recovery conditions were very difficult given the great depth and small size of the unit, and the fact that we encountered the suspect component at the close of the project. Jasper Rock, given its highly-polished, bright red color, has been observed to reflect the light of the setting sun, much as the glass windows of buildings do today. A small sample of soil was recovered from beneath Component 1, wet-washed using very fine mesh screen, and the screenings analyzed under a microscope by Rae Schwaderer, Thomas Wake, and me. Here are the first five locations. North, Petaluma Milt Brandt Visitor Center at Lake Sonoma (Friday-Sunday, 9 a.m. to 3 p.m.) By Email: lakesonomavc@outlook.com The permit fee is $35. 8216 Parkside Ct. Sebastopol, CA 95472. (707) 996-3400 M-F 7A-4:30P, Sa 7A-1P Visit website Stony Point Rock Quarry 7171 Stony Point Rd. Lang, Walter B.1941Polished Areas on Granitic Porphyries of the Hueco and Cornudas Mountains of Texas and New Mexico. The AFM mapping of the polish topography revealed traits not found in naturally-polished specimens (i.e., those created by the actions of wind, water, and faulting). It extended from the mouth of the California River (Howard 1979:74) west of the Golden Gate to a point north of the Russian Rivers mouth. Jasper Rock is located 3 km south of Mammoth Rocks. In: Beyond the Golden Gate - Oceanography, Geology, Biology, and Environmental Issues in the Gulf of the Farallones, Herman A. Karl, John L. Chin, Edward Ueber, Peter H. Stauffer, and James W. Hendley II, eds., pp. The origin of the pools has always been a bit of a mystery, and there are several theories that have been offered to explain them. To access some of these places, you have . While resembling blades in the most generic sense (i.e., having parallel sides and a length more than twice that of the width), these flakes are not true blades and are easily distinguished from the true blades (or microblades) also found at the site. 14 At 13,000 CALYRBP, the Duncans Landing Rockshelter had a 5-m high opening facing the ocean, and a similar one facing the hills (the rockshelter is derived from an ancient surge channel cut through the rock). White, Greg, Terry Jones, James Roscoe, and Lawrence Weigel1982Temporal and Spatial Distribution of Concave Base Projectile Points from the North Coast Ranges, California. If they want to take climbing to the great outdoors, we offer classes and clinics to teach them everything from tying proper knots to tackling El Capitan.'. War 4. The two main sites are referred to as Mammoth Rocks and Jasper Rock. However, some of the mechanically-produced zoofacts appear to closely resemble cultural debitage. Cremeans also offers excellent hunting for deer, turkeys, pronghorn and elk in California and other states, as well as Canada and Mexico. 89-107. For example, on the southern Mendocino Coast, the oldest uplifted terraces are located at about 300 m and date to 420,000 CALYRBP (Prentice 1989:133). 2). The spring and fall 2003, and spring 2004 archaeological field classes from Santa Rosa Junior College, under the direction of Thomas Origer, and a summer 2003 volunteer crew under my direction, have to date excavated approximately 30 cubic m of the site. Cambridge: Cambridge University Press. Also in summer 2004, Jack Meyer of Sonoma State University excavated a column sample from the 4x4 m exposure at Jasper Rock. New York: Altamira. This gorgeous region is also an ecological paradise containing countless microclimates and an immense diversity of species. Disclosure: These are links to Amazon. This helps remove extoparasites from the animals skin. Santa Rosa: California State Parks. zatarain's chicken fry mix ingredients New Lab; brown service funeral home obituaries; orange high school graduation 2021; the dragon paper airplane; rock hunting in sonoma county. Austin: University of Texas Press. of Geology, University of Wisconsin, Green Bay) has identified a likely rubbing rock at Rock Springs near the Baraboo River. what is television segregation Search Located just an hour northeast of San Francisco, the city of Sonoma makes a great jumping off point for exploring Sonoma County. 11 Using comparative data from the Serengeti Plains of East Africa, the Arctic National Wildlife Refuge in Alaska, and the historic American Great Plains, and assuming a grassland environment for the Franciscan Valley and Farallon Plain, I calculate an optimum Rancholabrean predator-prey relationship for local grassland and grassland-savanna areas at approximately 1/140 (Parkman 2003a). Unfortunately, to date no other work has been attempted in this regard. To the west, an approximately 400,000-ha prairie extended from the mouth of the California River south to the San Benito River. 2). Journal of California and Great Basin Anthropology 6(2):217-224. It is a terrific day or overnight trip with ocean-front camping spaces. If so, then it seems probable that some of Californias vernal pools began as animal wallows. I am currently exploring how best to investigate this aspect of the Rancholabrean Hypothesis. These microblades are primarily obsidian backed bladelets, perhaps found largely at sites proximal to the major obsidian sources at Napa Glass Mountain and Borax Lake. There is a vast array of rocks still out there to be found, not to mention possible fossils and crystals. (5) Because the deep unit was sited directly beneath a heavily-polished knob of the outcrop, care must be taken to segregate possible geofacts and zoofacts from artifacts. I believe that is only partly true. The fact that wetland plants have colonized abandoned bedrock mortars (Holland 2000:28) and tire ruts (Bauder et al. 21-36. Extremely High Polish on the Rocks of Uplifted Sea Stacks along the North Coast of Sonoma County, California, USA. Must be free of dirt, grass and debris. 8 Evapotranspiration rates should have varied significantly enough between the coast and interior to make the coastal prairie attractive to the local megafauna in summer months. They may not represent microblades in the truest sense but are perhaps best described as utilized blade-like flakes. Several backed bladelets of chert (Fig. rock hunting in sonoma county. You do it for the love of doing it. The cliffs of the beach are a mishmash of colors. In 2005, a friend brought him to Vertex (then owned by founders Janet Wells and Mark Ripperda), and Cooley discovered a compelling new athletic direction. Find 9 listings related to Hunting Clubs in Sonoma on YP.com. San Gabriel River Placer Gold. Black Jack Silver Mine - (1 collector specimens from same city, 1 collector specimens from nearby locations) Azusa. However, they do allow a sense of the ecological dynamics of the Rancholabrean landscape. Additionally, two small blade-like flakes of quartz were found at 200-210 and 310-320 cm, but will likely prove to be percussive shatter or perhaps even geofacts (Fig. of Physics, participated in this research. Franciscan Valley is what Daniel Axelrod (1981:848) has termed the trough that is now inundated by San Francisco Bay. Society for California Archaeology Newsletter36(4):26-31. 2). The Napa River Unit was first leveed off (diked) from . Permits will be issued by drawing. I have recently added a new theory to the mix. Fig. And with so many local antique stores offering such a diverse assortment of quality heirlooms, you're sure to have a memorable time scouring the shops for distinctive treasures. At an old mining camp in the mountains above Cazadero in Sonoma County is a Mars-like panorama of steep crumbling red slopes, bizarre mineralized formations and green serpentine rock. Brendan ONeil, an Associate Resource Ecologist with California State Parks, led me to the Jasper Rock site several weeks later. During summer 2003, I worked with a team of researchers at Sonoma State University to analyze samples of the polished rock using both a Scanning Electron Microscope (SEM) and an Atomic Force Microscope (AFM). It is likely that plant adaptations and ecological dynamics mitigated against the in filling of many of the pools. The fitter you get as a climber, the harder you climb. Schwaderer, Rae1992Archaeological Test Excavation at the Duncans Point Cave, CA-SON-348/H. Over time, plants and animals have adapted to the craters, and they are now a part of the local ecology. If you like to have a physical book in hand (like when theres no cell service), heres a few popular options: Rockhounding California: A Guide To The States Best Rockhounding Sites, Smithsonian Rocks and Minerals Identification Guide. The use of the vernal pools by megafauna during the late Pleistocene would have maintained many of the pools depressions until the time of the megafaunas extinction, perhaps as late as 10,000 CALYRBP. In that area, it is found significantly lower at approximately 79 m elevation. Founded in the 19th century, this Southern Sonoma County city's colonial past is on display in the town's picturesque city center, where historic buildings coexist with modern establishments. In: Essays on the Prehistory of Maritime California, Terry L. Jones, ed., pp. Proceedings of the American Philosophical Society 106(2):94-105. Report on file at California State Parks, Sonoma. Together, we can protect and preserve the beauty and natural resources of Sonoma County for generations to come. Joshua Tree National Park contains many great rocks and minerals but is off-limits for collecting. Quaternary Research. 139-166. Journal of California and Great Basin Anthropology 7(2):260-269. With such growing interest, here are three locations in Sonoma County where you will be able to find what you are looking for. American Antiquity 25(3):405-407. To date, the excavations at Mammoth Rocks and Jasper Rock have revealed little if any tangible subsurface evidence of the Rancholabrean megafaunas presence; they have instead revealed evidence of a human presence that may have considerable antiquity. Kirk Peterson and Bruce Miller discovered two rubbing rock sites on the former shoreline of Lake Lahontan in northwestern Nevada (Peterson 2002). In spring 2003, six 1x1 m units were excavated near the jasper outcrop. Flannery, Tim1994The Future Eaters: An Ecological History of the Australasian Lands and People. Quaternary Research 31:107-112. What are lacking, however, are blade cores. While a few microblade cores have been found at CA-NAP-58 and at a few sites on Ritchey Creek and in Lake County, their relative paucity makes my proposed microblade technology extremely problematic. It is bounded by the Pacific Ocean to the west, and features 76 miles (122 km) of coastline. Monthly meetings offer a multimedia presentation and an opportunity to mix with local climbers, and are free to the general public. This is only the beginning for what Hunting Lions have in store. Its a typical field region, known across the globe for its superb exposures of a vast array of rocks and formations. Type A1 (n=11) were long, narrow blade-like obsidian flakes ranging from 40-80 mm in length, with retouch around the edge or along both long sides. The polished surface of the Red Hill boulder measures about 1 m square and is almost completely covered with lichen. Grindstone Creek - Calcite crystals. Archaeological Investigations at Jasper Rock. The objects were collected from a currently inundated shoreline site (Lakeside Park) on Clear Lake during the 1977 drought. The areas mentioned here are probably the best, but are by no means all the sites. Another corridor was probably the area comprised of the Estero Americano, Estero San Antonio, San Antonio Creek, Americano Creek, and Stemple Creek drainage systems linking Novato and Petaluma with Bodega Bay. Vertex Climbing Center, 3358A Coffey Lane, Santa Rosa, 707-573-1608, info@climbvertex.com The Rock Ice & Mountain Club serves the climbing and outdoor community of the North San Francisco Bay Area and beyond. West County Tennis Association. To date, I have located six sites consisting of one or more rubbing rocks, all within an area about 4 km in diameter. Obsidian backed bladelets have also been reported from CA-NAP-1, the Goddard site (Heizer 1953:264, 341). The 17-mile-long Sonoma Valley covers the southeastern portion of the county. Special Issue: Vernal Pools. But regardless, I believe that something useful will be learned in the process. Carlson, F.L Wong, and D.A. In Minnesota, Kevin Callahan has recorded an ancient buffalo rubbing rock at the famous Jeffers Petroglyph site. The county comprises an area of 1,768 square miles. 3H) came from this component as did an end scraper with apparent blade scars on its dorsal surface (Fig. Mule Mountains Fire Agate. Actually, it would be surprising if the earliest inhabitants of the Sonoma Coast did not make use of this rockshelter, given its exceptional size and strategic location. Go forth and explore. These are all within San Mateo County, and are 10 minutes to half an hour away from each other. Also present at CA-NAP-58 are examples of bifaces made on blades or blade-like flakes. rock hunting in sonoma county. 4 During the 1989 excavation at the Duncans Landing Rockshelter, I saw what I believed to be scant evidence of a possible cultural component below Component 1. Come and learn more about your local rock club. You are allowed to have a car and a legally towed car at your site.