Boesmansgat (or Bushmansgat), also known in English as "Bushman's Hole", is a deep submerged freshwater cave (or sinkhole) in the Northern Cape province of South Africa, which has been dived to a depth of 282.6 metres (927 ft).

Boesmansgat was believed to have first been explored by amateur diver Mike Rathbourne, in 1977.

[1] Gomes' dive was a close call, as he got stuck in the mud on the bottom of Bushman's Hole for two minutes before escaping.

[3] In October 2022 Karen van den Oever broke her own Guinness World Record[4] as the world’s deepest diving woman when she descended to 246.65 metres (809.2 ft) using open-circuit equipment.

[5] In Mo Hayder's novel Ritual (2008), the death of the parents of one of the protagonists while diving in Bushman's Hole is an important plot device.