Harwoods Hole, Natural limestone cave in Abel Tasman National Park, New Zealand.
The vertical shaft plunges 183 meters deep into the earth, featuring a 50-meter-wide entrance opening in the limestone formations of Takaka Hill.
Local cavers first explored this deep vertical shaft in 1958 using basic equipment, marking the beginning of systematic cave exploration in New Zealand.
The cave system holds particular importance for New Zealand geologists and speleologists who study its ongoing limestone formation processes through water percolation.
Entering the cave requires extensive vertical caving experience, specialized equipment including a 200-meter static line, and a minimum of nine hours for completion.
Water from an area of 20 square kilometers converges through various sinkholes into the cave system, resulting in continuous calcite deposits inside.
Location: Tasman District
GPS coordinates: -40.95010,172.86940
Latest update: March 9, 2025 18:16
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