A high altitude out-and-back to "Overview Point", or the "backdoor" to the popular Chicago Basin / Highland Mary Lakes areas. A high altitude out-and-back, or the "backdoor" to the popular Chicago Basin / Highland Mary Lakes areas. Trail climbs across the upper contours of a sloped mesa that ends at the south ridgelines of the Chicago Basin. At the Lime Mesa trail's end is a great "Overview Point" which gives a view to several of the 14'ers in the heart of the San Juan Mtns. The trail keeps mainly to open treeless alpine meadows at the upper end, after passing through a few alpine spruce / fir groves near the trailhead.