Colorado Springs is a home rule municipality in, and the county seat of, El Paso County, Colorado, United States. It is the largest city in El Paso County, with a population of 478,961 at the 2020 United States Census, a 15.02% increase since 2010. Colorado Springs is the second-most populous city and the most extensive city in the state of Colorado, and the 40th-most populous city in the United States. It is the principal city of the Colorado Springs metropolitan area and the second-most prominent city of the Front Range Urban Corridor. It is located in east-central Colorado, on Fountain Creek, 70 miles (113 km) south of Denver.
Mado, which means "the source of the Yellow River" in Tibetan, is located in the northwest of Guoluo Tibetan Autonomous Prefecture in Qinghai Province, in the south of Qinghai Province, in the northwest of Guoluo Tibetan Autonomous Prefecture, and belongs to Guoluo Tibetan Autonomous Prefecture. Mado County is bordered by Dulan County, Haixi Mongolian Autonomous Prefecture in the north, Xinghai County in Hainan Tibetan Autonomous Prefecture and Maqin County in Guoluo Tibetan Autonomous Prefecture in the east, Dari County in Guoluo Tibetan Autonomous Prefecture and Shiqu County in Sichuan Province in the south, Qumalai County in Yushu Tibetan Autonomous County in the west, and Yushu Tibetan Autonomous Prefecture in the southwest. It is 207km wide from north to south and 228km long from east to west, with a total area of 25253 square kilometers. The average altitude is more than 4200 meters, and the annual average temperature is-4 ℃, which belongs to alpine steppe climate. Lake Eling, Lake Zaling, Lake Donggezona, Xingjinghai,