Bulmer Cavern, Cave system in Tasman District, New Zealand
Bulmer Cavern extends through Mount Owen for 74.3 kilometers, featuring numerous passages, limestone formations, and underground chambers throughout its network.
The discovery of this cave system occurred on New Year's Day 1984 when John Patterson determined its depth by dropping a rock and timing its descent.
The cave network holds particular importance for New Zealand speleologists who document and study its geological characteristics and underground formations.
Visitors need specialized equipment and proper guidance to navigate through the cave system, as some sections require technical climbing and diving skills.
As New Zealand's longest cave system, Bulmer Cavern contains unexplored areas that researchers believe could extend its total length beyond 150 kilometers.
Location: Tasman District
GPS coordinates: -41.55830,172.51880
Latest update: March 9, 2025 05:14
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