The park’s main attraction is a large (77,053 sq. ft.) artesian spring pool that is open daily and fed by San Solomon Springs. The springs also fill a ‘cienega’ (desert wetland) and the canals of a refugium, home to endangered species of fish, assorted invertebrates, and turtles. The pool differs from most public pools in several respects: the 1 3/4-acre size, the 25-foot depth and the 72 to 76 degree constant temperature. It also has a variety of aquatic life in its clear waters. With a capacity of more than 3 1/2 million gallons, the pool has plenty of room for swimmers, while offering a unique setting for scuba and skin diving.