Ellis Basin cave system

The Ellis Basin cave system is a group of interconnecting limestone caves located in the Mount Arthur region of the northwest South Island of New Zealand.

Ellis Basin cave system
Location of Ellis Basin cave system
Location	Wharepapa / Arthur Range
Coordinates	41.232°S 172.685°E / -41.232; 172.685
Depth	1,026 metres (3,366 ft)
Length	33.4 kilometres (20.8 mi)
Discovery	1960s
Geology	Limestone

The Ellis Basin cave system was first explored by cavers in the 1960s. In April 2010, the cave system was found to be deeper than the nearby Nettlebed Cave, making it the deepest known cave in the Southern hemisphere.^[1] It has been explored to a depth of 1,024 m (3,360 ft), and its 33.4 km (20.8 mi) of cave passages make it New Zealand's second longest.^[2]

See also

• List of caves in New Zealand