Nine Mile Canyon is actually about 40 miles long, don't let the name fool you. Many people call it the longest art gallery in the world. If you're ever in Utah and want to see some spectacular rock art Nine Mile Canyon is the place to go.
Wow great pictures. The resolution is great for enlarging. Each glyph is a story. How fun it would be to study and document them. Thanks for sharing things I would not normally see. Great post.