The San Juan Basin includes more than 4,000 square miles of rugged topography of plains and valleys and beautiful buttes, canyons and mesas. In addition to the culture and beauty of Chaco Canyon and Chacra Mesa, the San Juan Basin also has uplands that reach to more than 9,800 feet.
As a geologic region, the San Juan Basin contains large deposits of coal, uranium and natural gas. Since 1980, the Fruitland Formation in the basin has been one of the major sources of coalbed methane in the United States. In 2007, the Basin produced 1.32 trillion cubic feet of natural gas, making it the largest source of natural gas in the U.S.