A few petroglyph boulders from Celebration Park, Idaho.

A tilted wooden sign welcomes visitors to Celebration Park, Idaho's first archaeological park, set against a backdrop of dry hills and blue sky.

A large rock surface etched with ancient petroglyphs sits among other boulders in a dry, open landscape under a clear blue sky.

A rocky landscape featuring ancient petroglyphs carved into a large boulder under a clear blue sky.

Large rocks with ancient petroglyphs carved into their surfaces are set against a partly cloudy sky.

Ancient petroglyphs are carved into a large boulder in a desert landscape with scattered rocks, dry grass, and sparse bushes.