History: Originally known as Interior Valley and was once noted for its continually flowing springs. A disastrous fire in 1876 destroyed its splendid stand of Engelmann spuce, with the probable result that the springs are now intermittent.

This is Probably one of the prettiest hikes in the Flagstaff Area. It starts in Locket Meadow and ends up in the Inner Basin. This is the only place in Arizona you will be completely surrounded by mountains. It really feels like a 'Little Colorado.'

The Inner Basin is the middle of the crater of San Francisco Mtn, Arizona's only Stratovolcano. Surrounding you is Arizona's 6 highest points, and 4 highest mountains. As you enter the Inner Basin, from right to left you have Rees Peak (11,474 feet), Aubineau Peak(11,878 feet), Humphreys Peak(12,633 feet), Agassiz Peak (12,356 feet), Fremont Peak, (11,969 feet) and Doyle Peak (11,460 feet). Rees Peak and Aubineau peak are not real Peaks, just named high points on Humphreys ridge. This is the only place in Arizona that mountains higher then 11,000 feet completely surround you.

The trail you are on is an old forest service road. Only certain vehicles are allowed up this road. Horses and Bikes are allowed.

The hike in is a steady but easy climb the whole way. Thick forests surround you. The forest is a mix of firtrees and aspens. The ground is covered in ferns and grass. There is not one place you can see where you're going. There are no views until you reach the Inner Basin. If you hike when there is snowmelt, the spring is running, which adds to the beauty. In the fall the aspens are changing colors which makes for a photographers paradise.

Note: Camping is not allowed in the Inner Basin
- May 20 2002 Steven

Coconino FS Reports  The San Francisco Peaks are actually the remains of an extinct volcano. Millions of years ago this great mountain was shattered by an explosion similar to the one that devastated Washington's Mt. Saint Helens in 1980. Inside the now quiet caldera a lush alpine environment has blurred evidence of that cataclysmic event.

The trail into the heart of the ancient volcano begins in beautiful Lockett Meadow. From this island of emerald ringed with aspens and high peaks it follows a primitive road into the mountain's now quiet Inner Basin and then connects to the Weatherford trail. Here, extensive stands of aspens cover the steep slopes of the old caldera coloring them solid gold in early fall. In spring and summer, wildflowers add a sprinkling of blue, red and yellow. From the basin's rims, avalanche tracks streak down the talus slopes and remnants of old lava flows bear witness to the mountain's cataclysmic heritage.

Snow may remain here even into summer. Cross-country skiers continue to ski as late as June in some years. Hiking is the most popular way of visiting this beautiful and unique environment; however, and hikers begin coming to the basin before the snows have completely melted from the trail.

Animals you may see in this high country include porcupine and elk. Black bears have been known to stroll right through groups of picnickers without so much as a glance at their lunches. The hermit thrush sings his best here. The climb to this high mountain place, where spring comes late and fall arrives early, is moderate but steady, but the reward is worth every bit of the effort.