Sunset Crater Volcano National Monument

Sunset Crater National Monument is a really cool and unique place to check out a few miles past Flagstaff's mall on the east side.
It features dramatic landscapes that you can investigate first hand with relatively easy hikes. The Lava Flow Trail even features a paved portion that is accessible for wheelchairs and strollers. Be sure to stop and read the plaques along the path to learn about the area’s fascinating past.
There's also camping near by.