 It encompasses two entire subranges of the Blue Mountains—the Greenhorn Mountains and the ragged Elkhorn Mountains.A continuous vegetative canopy covers most of the land, including dense virgin stands of conifer species like Douglas-fir, white fir, western larch and lodgepole pine.The headwaters of several waterways are located in the wilderness, including Bull Creek, Baldy Creek, and Crawfish Creek, as well as the North Fork John Day River, of which are designated Wild and Scenic.