Aiken Spring, also known as the "Eye of the Devil" - Foto stock

Aiken Spring, also known as the "Eye of the Devil", is located in Moheerbrook Village, Huatugou Town, Mangya City, Haixi Mongolian and Tibetan Autonomous Prefecture, Qinghai Province, China. The spring has a diameter of more than 10 meters and a depth of more than 1 kilometer. The water temperature is kept at around 30 degrees Celsius all year round, and the gushing can reach half a meter high. Because the spring water has a high sulfur content, no grass grows around it.