 This may be the oldest known intentional burial in North America.In 1996-1997 a group of diver explorers conducted an underwater survey of the site resulting in the mapping of two warm water vents ~97 degrees F and two cool water vents ~76 degrees F. The group also video taped the site including the source of the deepest warm water vent at the end of a 150 ft. lone cave.Warm Mineral Springs was purchased on December 20, 2010, by Sarasota County and the city of North Port for $5.5 million.