The Maroon Bells–Snowmass Wilderness is a U.S. Wilderness Area located in the Elk Mountains of central Colorado. The 181,535-acre (734.65 km2) wilderness was established in 1980 in the Gunnison and White River national forests. Within its boundaries are 100 miles (160 km) of trails, 6 of Colorado's fourteeners and 9 passes over 12,000 feet (3,700 m). Perfect stillness, combined with colorful skies is a rare site, Maroon Lake reflects the awesome beauty of the Fall Season at the Maroon Bells - Snowmass Wilderness. The colors should be at their best around the third or fourth week of September.