| The U.S. and Mexico border. |
| The U.S. and Mexico border. |
The Kitt Peak National Observatory is a United States astronomical observatory located on Kitt Peak of the Quinlan Mountains in the Arizona-Sonoran Desert on the Tohono O'odham Nation.
Keet Seel is open Memorial Day to Labor Day, and a permit is required to visit the ruins. It is a 15 mile round trip hike. There is an overnight campground near the ruins.