Blue Hole Lake, NM

An artesian spring in Santa Rosa delivers 3,000 gallons of clear water a minute to an 80-foot-deep opening in rock formations. With water delivered at 61 degrees, it is open year-round for swimmers (cold water), qualified scuba divers and scuba classes. No swimming fee, a modest fee for scuba divers payable at the police department. Contact Santa Rosa Dive Center, P.O. Box 196, Santa Rosa, NM 88435; (505) 472-3370.