The current record for the highest scuba dive was set on December 13, 2019 by Polish diver and mountaineer Marcel Korkus. He dived at an altitude of 6,395 m above sea level (20,981 ft), on Ojos del Salado volcano setting an absolute world record in altitude diving. He is the first person to dive at such a high altitude. The dive took place in the so-called basin (a natural water reservoir, which in terms of dimensions cannot be considered a lake). The ice was 1.3 meters thick and the water temperature was 3 °C. It is probable that a human cannot dive at any higher altitude.