The Bolder Canyon Trail can be accessed either from Pine Mountain Campground or from the HWY 33 at the Ozena Station, the trail climbs steeply from Ozena which is at 3500 feet elevation asending up to the summit and Pine Mountain Campground at 6500 feet. This trail is located just outside of the Sespe Wilderness Area. A small spring named McGuire Spring is located about 1 mile down trail from Pine Mountain Campground . The trail meanders through a wonderfully blissful pine forest, along the trail you will enjoy splendid views of the Lockwood Valley and Mt. Pinos. As you approach Lockwood Valley the flora quickly turns from conifer forest and into desert sage brush and grassland.