Can you name the artist?

Dinosaur National Monument is a well-known repository of Native American rock art, with much left from Fremont culture artists or shamans.

According to the National Park Service, "The style and content of Fremont designs vary throughout the region. The “Classic Vernal Style” predominates in Dinosaur National Monument. This style is characterized by human-like figures, animal-like figures, and abstract designs."

This image, snapped as our raft floated down the Green River in the monument's Island Park area, is a petroglyph roughly 6 feet in length and about 4 feet tall.

Note: This image was enhanced to bring out the petroglyph.