Along with motel-type accommodations, 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.
Wonderful swimming hole on a warm day. Water is crystal clear and refreshing. We even saw the pup fish that is found nowhere else in the world. I'm a fan of good swimming holes and this one ranks at the top of my list.... For activity in describing this place there was not a swimming choice, so scenic drive was as close to anything I could come up with.