O'Leary Peak

O'Leary Peak is an extinct volcano in Coconino National Forest that rises about 8920 feet above sea level. The mountain features volcanic rock formations throughout its slopes and has a fire lookout tower at its summit that once served as a vantage point for spotting forest fires.

The volcano formed through lava accumulation millions of years ago and became part of the San Francisco volcanic field. A fire lookout tower was later constructed at the summit to monitor and prevent forest fires across the surrounding woodlands.

Several Native American tribes consider the San Francisco Peaks region, including O'Leary Peak, as part of their traditional territories and sacred lands.

The hike is demanding and takes several hours to complete, so sturdy hiking boots and plenty of water are essential. The best time to visit is from spring through fall when weather conditions are most stable and enjoyable.

From the summit on clear days, visitors can see across to Sunset Crater, a nearby volcanic cone that has a different appearance and history. This view reveals how the volcanic landscape developed over time with multiple eruptions occurring at different periods.

GPS coordinates: 35.40153,-111.52636

Latest update: December 14, 2025 11:04