The 11,000 year old San Solomon Springs are a series of artesian and gravity springs formed by subsurface geologic faults that flow an amazing 18,000 gallons a minute. 

San Solomon Springs are home to two endangered species of small desert fish: the Pecos Gambusia and the Comanche Springs Pupfish 

The San Solomon Spring pool, located in Balmorhea State Park, is the world's largest spring-fed swimming pool, covering an area of 1.75 acres

Balmorhea State Park was built by the Civilian Conservation Corps in the 1930s and opened to the public in 1968.