This Nevada County site (Martis Complex, 2000 BC–500 AD) is one of the three largest known petroglyph locations in our region. As with many Martis sites, the imagery is predominantly abstract a sophisticated collection of lines, patterns, and forms whose meanings are still being studied. Situated near a popular recreation lake, the site has suffered extensive vandalism over the years, including graffiti, surface damage, and attempts to remove portions of the rock.

Because these petroglyphs are carved into exposed bedrock, any damage is permanent. Once a line is scratched, a surface is chipped, or modern markings are added, the cultural record is irreversibly altered. Protecting sites like this is essential not only to preserve the artistry and knowledge of the Martis people, but also to honor the deep Indigenous history of the Sierra Nevada. Each panel is a rare, irreplaceable link to the past and once lost, it cannot be restored. This site’s size, age, and cultural significance make its protection a priority for FSRA and for future generations who deserve the opportunity to learn from and appreciate these ancient expressions..