Kilbourne Hole is a remnant of an ancient volcanic explosion, the crater is between 24,000 and 100,000 years old, and measures 1.7 miles long by well over a mile across, and is hundreds of feet deep. This trail is a single vehicle width trail that takes you on a full loop around the crater with incredible views. A stock 4x4 can easily make this trip. There are a few gates along the way you must open and close for yourself.

Directions:

The website below will give detailed instructions. I was able to use a generic navigation app on my phone to navigate straight to the edge of the crater.