Ellis Basin cave system

Ellis Basin cave system
Relief map of New Zealand with a red dot in the upper South Island showing the location of the cave system
Relief map of New Zealand with a red dot in the upper South Island showing the location of the cave system
Location of Ellis Basin cave system
LocationWharepapa / Arthur Range
Coordinates41°13′55″S 172°41′06″E / 41.232°S 172.685°E / -41.232; 172.685
Depth1,026 metres (3,366 ft)
Length33.4 kilometres (20.8 mi)
Discovery1960s
GeologyLimestone

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.

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]

  1. ^ "Kahurangi National Park: a treasured possession". www.aa.co.nz. Retrieved 13 January 2024.
  2. ^ Board, Andrew (13 April 2010). "Historic discovery by NZ cavers". Nelson Mail. Archived from the original on 9 November 2018.