The Great Gallery is a large panel of Barrier Canyon style pictographs that is located in Horseshoe Canyon in the western annex of Canyonlands National Park in the state of Utah. The Holy Ghost section is the most popular part of the panel. Barrier Canyon style pictographs from this area date back 3,000 – 4,000 years and are some of the oldest rock art in North America. Here is a link to learn a little more.
The Great Gallery of Horseshoe Canyon