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.
At the trailhead, there's a little room for a vehicle camp or just up the trail 50 - 100 yards, there are some good tent sites. Yeoman Park CG offers a more civilized alternative but is typically full on weekends. At the trailhead, we have found the mosquitoes to be quite voracious both times we've been there in both early and late July.