O-J-I is a 3,419-foot mountain in Maine’s Baxter State Park, the last peak in a chain extending west from Mount Katahdin. Its name came from a rock face where landslides once formed the letters O-J-I, a natural feature that was heavily damaged by the Great New England Hurricane of 1938 and is now much less distinct. On its back side lies the Klondike, a large triangular spruce flat at about 2,900 feet. The mountain rises in Baxter’s conifer-rich landscape, with pines, fir, spruce, and hardwoods, while nearby high ground supports alpine plants and wildlife including moose, bear, lynx, brook trout, bald eagles, and Bicknell’s thrush.