| Size | Country |
|---|---|
| 1,6 km diameter (Sunset Crater) 143 km² (Wupatki National Monument) 9,103 km² (Walnut Canyon) |
United States of America |
In a rewarding day of driving, I discovered the surprising Sunset Crater, the historic Wupatki National Monument and the remarkable Walnut Canyon. As I admired their unique characteristics, I was also astounded by its closeness to my residential city Flagstaff.
