Legend Rock State Petroglyph Site is a 400 meter long, near vertical cliff with more than 92 prehistoric petroglyph panels and over 300 petroglyph figures. While the site is not extensively promoted, Legend Rock is already a world-renowned petroglyph site. Legend Rock has been a sacred site for Native Americans of this region for thousands of years. Local concern for the preservation and protection of the site led to acquisition of the property as a Wyoming State Petroglyph Site in 1973. During the same year, the site was placed on the National Register of Historic Places. Legend Rock Petroglyph Site is one of the most fragile in the Wyoming State Parks system.
Legend Rock is located 29 miles northwest of Thermopolis. Visitors may access the site year-round by picking up a key from the Thermopolis Chamber of Commerce located at 220 Park Street. Completed in 2011, Legend Rock now has a visitor center, interpretative trails and picnic shelter. During the summer, the visitor's center will be operated by volunteer site hosts.