This famous bluff along the Oregon Trail is capped by ponderosa pine wooded habitats, and has steep sides that are used as nesting sites by white-throated swifts. At least 100 species have been reported for the area, including prairie falcon, burrowing owl, common poorwill, pinyon jay, both cuckoos, rock wren, yellow-rumped warbler, Baltimore and Bullock’s orioles, blue and black-headed grosbeaks, spotted towhees, three races of dark-eyed juncos, violet-green swallows and lazuli bunting. In winter Gray-crowned Rosy-Finch have also been seen here. There is a 3-mile nature trail leading from the summit parking lot to the visitor center.