With the first complete route established by 1906, 4.8-mile Fern Lake Trail has long served tourists to Rocky Mountain National Park and the Estes Park area. Providing a scenic route through the park, the trail’s destinations include Fern Lake and Odessa Lake. In the 1920s, Fern Lake had become a ski destination with the Colorado Mountain Club making annual wintertime outings to Fern Lake from 1916-1934.