East of the town of Williams is the highest point in Arizona.
Humphreys Peak is the tallest peak in the San Francisco Peaks (upper left), but is often hidden from view on I-17 behind the second tallest mountain in the State, Agassiz Peak (12,360 ft). From the top, you can see all the way to Grand Canyon (a little more than 70 mile
The nine-mile-round-trip hike officially begins around 9,500 feet in elevation at Arizona Snowbowl. The main trailhead is located on a parking lot to the left of Snowbowl Road as it passes into the developed ski area. However, hikers can save about a mile of walking by driving up to the upper lodge of Snowbowl for the second of two trailheads. A spur trail from this lodge connects with the Humphreys Trail, though some locals consider this the unofficial route of ascent.
From there, the trail winds thru a dense alpine forest and steadily ascends to a ridgeline. From here, the trail heads to a saddle located between Humphreys and Agassiz Peaks. Due to threat of a rare plant species, ascending to the top of Agassiz is not permitted.
The Humphreys Trail continues as a cinder path, a little more than a mile from the saddle to the peak. Expect high winds and sprawling and spectacular views in all directions.
The San Francisco Peaks are the remains of an eroded stratovolcano which erupted around 200,000 years ago (before eruption, 16,000 ft).
A stratovolcano is a tall, conical volcano composed of one layer of hardened lava, tephra, and volcanic ash. Plan on spending the day between nights at Grand Canyon Bed and Breakfast and spend a day on Humphreys Peak.