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The La Barge Bluffs Petroglyph site consists of nine panels of some of the richest and most expressive rock art in western North America. The rock art occurs on flat, west-facing sandstone surfaces that are located just above an overflow channel of the Green River, downstream from the town of La Barge, Wyoming. The rock art panels cover 215 meters along the bank of this river channel. Images indicate the site was visited by Native American artists starting in the Late Prehistoric period. The rock art reached its artistic height during the Historic period, as seen in the Late Biographic images which show extremely realistic narrative scenes. By finding similarities in the rock art when compared to robe and ledger drawings, the Late Biographic scenes have added valuable information to what rock art researcher James Keyser has termed the Biographic rock art lexicon.