UN 13,015 (formerly UN 13,020 interpolated) near Maroon Lake and Willow Pass has been determined to be no longer a ranked summit per Lidar evaluation, which gives it 292 ft. of prominence. This has reduced the total number of ranked 13ers from 584 to 583.
A mostly Class 1, barely Class 2 hike that can be easily combined in the same day with Mount Mamma. 4WD with good clearance can shorten the mileage, but why not keep it sporting? Much of the mountain can be ascended on an old mining road. The remainder involves grassy tundra, and of course, the inevitable rocky talus. Lidar measurements added 2 more feet.