|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.