This site (Martis Complex, 2000 BC–500 AD) sits on a large outcrop overlooking the American River and contains approximately 750 individual images, making it the largest known petroglyph site in the northern Sierra. Among its many figures is a remarkably detailed bear track that shows the rear and front pads, toes, and even an arc representing claw placement — an unusually accurate rendering compared to the more abstract bear-paw motifs typically found at Martis sites, such as the paired designs shown in one of the photos. Another distinctive element at this location is a 6-foot headless rattlesnake figure, a rare and striking motif within the region’s rock-art traditions.