Some of the oldest natural history of this area related to mammals are a rock formation about one mile (1.6 km) south of the Russian River. There is found a sea stack formation with prominent rubbing marks about two to four meters in elevation, a height too high to have been caused by modern bovids. Mammoths are believed to have roamed here as recently as 40,000 years ago, and they are thought to have created these severe rubbing marks. Mammoth fossil remains have been found at Bodega Head at the south end of Sonoma Coast State Beach.
The underwater delineation of the property is considered to extend to 1,000 feet (300 m) from the shoreline. While no shipwrecks have been discovered, the literature indicates that there are 17 vessels which may have been lost in these waters. There are remains of numerous historic barns and other agricultural buildings on the coastal prairie indicating 19th century settlement byEuropeans; at Duncans Point there are iron pins embedded in the sandstone bluffs as evidence of the active shipping industry here in the late 1800s and early 1900s.
'From the summit on a clear day, it is possible to view the mountains of the Sierra Nevada and the southernmost mountain of the volcanicCascade Range, Mount Lassen more than 180 miles (289 km) away. Owing to the earth's curvature it is not possible to see the larger Mount Shasta, although Half Dome in Yosemite National Park, about 125 miles (201 km) to the east, can be viewed with a telescope when the atmosphere is exceptionally clear. Despite historic claims that the mountain'sviewshed is the largest in the world—or second largest after Mt. Kilimanjaro—these claims are unfounded. It is however, one of the largest viewsheds in the Western United States.' wikipedia