Another park at which we stopped for a short hike was Sunset Crater Volcano NM. This volcano is the youngest one on the Colorado Plateau, being formed "only" 1000 years ago.
We did not have too much time to spare there as it was slowly getting dark and we still needed to get to Flagstaff and find suitable accommodation for the following night. Because of that we only went there for a short hike on the Lava Flow Trail. Pity, I am sure it would be very rewarding to go for a longer hike in this outer-worldly landscape.
The crater, a weird cloud stuck above it, the lava flow and us on the bridge:
Another take on the crater: