Located in the south part of the San Francisco Volcanic Field, Flagstaff's horizon is layered with volcanoes. There is Humphrey's Peak, Mount Elden and Sunset Crater just to name a few. They have all been dormant with Sunset Crater last erupting nearly 1,000 years ago.

Is Humphreys Peak an active volcano?

Humphreys Peak is the highest of a group of dormant volcanic peaks known as the San Francisco Peaks. The summit can be most easily reached by hiking the 4.8 miles (7.7 km) long Humphreys Summit Trail that begins at the Arizona Snowbowl ski resort in the Coconino National Forest.

Is Humphreys Peak Open?

This scenic San Francisco summit is the highest point in Arizona at 12, 633 ft. This hike is open all year round but permits are required in the winter. ... The best times to make this climb are between late spring and early Fall.