In 1988 Sheck Exley, one of the greatest technical divers of all time entered a cave in Tamaulipas, Mexico. Almost eleven hours later he emerged breaking the previous deep cave mixed-gas diving record by 124ffw reaching an astounding depth of 780ffw. The previous record was his own. These like many records set by divers, including Canadian Dr. George Benjamin, trailed a path for today’s divers.