|San Juan Mountains|
|Elevation||14,309 ft (4,361 m)|
SAN JUAN MOUNTAINS Latitude and Longitude:
|State||Colorado, New Mexico|
|Parent range||Rocky Mountains|
The San Juan Mountains are a high and rugged mountain range in the Rocky Mountains in southwestern Colorado and northwestern New Mexico. The area is highly mineralized (the Colorado Mineral Belt) and figured in the gold and silver mining industry of early Colorado. Major towns, all old mining camps, include Creede, Lake City, Silverton, Ouray, and Telluride. Large scale mining has ended in the region, although independent prospectors still work claims throughout the range. The last large scale mines were the Sunnyside Mine near Silverton, which operated until late in the 20th century and the Idarado Mine on Red Mountain Pass that closed down in the 1970s. Famous old San Juan mines include the Camp Bird and Smuggler Union mines, both located between Telluride and Ouray.
The Summitville mine was the scene of a major environmental disaster in the 1990s when the liner of a cyanide-laced tailing pond began leaking heavily. Summitville is in the Summitville caldera, one of many extinct volcanoes making up the San Juan volcanic field. One, La Garita Caldera, is 35 miles (56 km) in diameter. Large beds of lava, some extending under the floor of the San Luis Valley, are characteristic of the eastern slope of the San Juans.
Tourism is now a major part of the regional economy, with the narrow gauge railway between Durango and Silverton being an attraction in the summer. Jeeping is popular on the old trails which linked the historic mining camps, including the notorious Black Bear Road. Visiting old ghost towns is popular, as is wilderness trekking and mountain climbing. Many of the old mining camps are now popular sites of summer homes. Though the San Juans are extremely steep and receive a lot of snow, so far only Telluride has made the transition to a major ski resort. Purgatory Resort, once known as Durango Mountain Resort, is a small ski area 26 miles north of Durango.  There is also skiing on Wolf Creek Pass at the Wolf Creek ski area. Recently Silverton Mountain ski area has begun operation near Silverton.
The Rio Grande drains the east side of the range. The other side of the San Juans, the western slope of the continental divide, is drained by tributaries of the San Juan, Dolores and Gunnison rivers, which all flow into the Colorado River.
The San Juan Mountains are also distinctive for their high altitude plateaus and peaks. As a result, facilities in the towns and cities of the region are among the highest in the nation. Telluride Airport at an elevation of 9,070 feet.,  is the highest in the United States with regularly scheduled commercial service.
- Note: This is only a partial list of important peaks in the San Juans, listing peaks by prominence only. There are dozens more summits over 12,000 feet.
|1||Uncompahgre Peak NGS||4365 m
|2||Mount Wilson ||4344 m
|3||Mount Sneffels NGS||4315 m
|4||Mount Eolus ||4294 m
|5||Handies Peak NGS||4285 m
|6||San Luis Peak NGS||4274 m
|7||Vermilion Peak  PB||4237 m
|8||Rio Grande Pyramid NGS PB||4214 m
|9||Mount Oso ||4173 m
|10||Tower Mountain  PB||4132 m
|11||Sultan Mountain  PB||4076 m
|12||Summit Peak NGS PB||4056 m
|13||Dolores Peak  PB||4053 m
|14||Lavender Peak  PB||4037 m
|15||Bennett Peak  PB||4026 m
|16||Conejos Peak NGS PB||4017 m
|17||Twilight Peak ||4012 m
|18||South River Peak  PB||4009 m
|19||Peak 13,010  PB||3967 m
|20||Lone Cone  PB||3846 m
|21||Graham Peak NGS PB||3821 m
|22||Elliott Mountain  PB||3763 m
|23||Cornwall Mountain  PB||3746 m
|24||Sawtooth Mountain NGS PB||3704 m
|25||Chalk Benchmark NGS PB||3669 m
|26||Little Cone NGS PB||3654 m
|27||Cochetopa Dome||3395 m
|28||Horse Mountain  PB||3033 m
Mining operators in the San Juan mountain area formed the San Juan District Mining Association (SJDMA) in 1903, as a direct result of a Western Federation of Miners proposal to the Telluride Mining Association for the eight-hour day, which had been approved in a referendum by 72 percent of Colorado voters.  The new association consolidated the power of thirty-six mining properties in San Miguel, Ouray, and San Juan counties.  The SJDMA refused to consider any reduction in hours or increase in wages, helping to provoke a bitter strike.
- Southern Rocky Mountains
- Sneffels Range
- Cimmaron Range
- Needle Mountains
- La Garita Mountains
- Cochetopa Hills
- La Plata Mountains
- Mountain ranges of Colorado
- Slothower, Chuck (25 Feb 2015). "It is 'DMR' No Longer". Durango Herald (26 Feb 2015). Archived from the original on 5 June 2016. Retrieved 17 May 2016.
- "Welcome to Telluride Regional Airport - TEX - Sits atop Deep Creek Mesa and is North America's highest commercial airport. Provides airline information and flight schedules, as well as details for pilots". www.tellurideairport.com. Archived from the original on 24 March 2018. Retrieved 5 May 2018.
- The elevation of this summit has been converted from the National Geodetic Vertical Datum of 1929 (NGVD 29) to the North American Vertical Datum of 1988 (NAVD 88). National Geodetic Survey Archived 2011-10-19 at the Wayback Machine.
- Roughneck—The Life and Times of Big Bill Haywood, Peter Carlson, 1983, page 65.
- The Corpse On Boomerang Road, Telluride's War On Labor 1899-1908, MaryJoy Martin, 2004, page 201.
- Bove, D. et al. (2001). Geochronology and geology of Late Oligocene through Miocene volcanism and mineralization in the western San Juan Mountains, Colorado [U.S. Geological Survey Professional Paper 1642]. Washington, D.C.: U.S. Department of the Interior, U.S. Geological Survey.
- Lippman, P.W. (2006). Geologic map of the central San Juan Caldera Cluster, southwestern Colorado [Geologic Investigations Series I-2799]. Reston, VA: U.S. Department of the Interior, U.S. Geological Survey.
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