Several Alpine Huts and campsite are located throughout the McCully Basin, which are used as a base camp in the winter for telemark skiing.

[5] McCully Basin starts at the wilderness boundary and runs north–south towards Big Sheep Creek and Tenderfoot Wagon Road.

The geology of the peaks surrounding the McCully Basin are basalts that resemble more the strata in the Columbia River Gorge than to the distinctive slopes of marble and granite in most of the Wallowa–Whitman National Forest.

The McCully basin starts in the north with formerly diseased forests composed mainly of Engelmann spruce, western larch, scrappy woods of lodgepole pine, Douglas fir, and an underbrush of Sitka alder, Labrador tea, lupin and grouseberry.

[8] Sheep and cattle graze throughout Eagle Cap Wilderness, including the surroundings of Mount Nebo.