Prehistory Images
of Portola, Graeagle & Sierra Valley Region


Meadow Lake Petroglyphs, Sierra County



Feather River Bedrock Mortars (left frame) < > Frazier Creek Petroglyph (right frame)


Drills, Gravers, and Scrapers (left frame)
Martis-type Projectile Points (right frame)


Martis-type basalt knives and Scrapers < > Kings Beach-type Chert and Jaspar Points