Photo: NelsonTasman.nz via LDR
Neill Molloy has descended Harwoods Hole about 50 times over the last decade and says he is perplexed by the Department of Conservation's decision to close the track to the sinkhole.
"It is a really spectacular cave system."
The lifelong recreational climber has taken "literally hundreds" of people - from teens to septuagenarians - into the country's deepest natural vertical shaft.
Molloy said people were "ecstatic" after going through the caves.
"[It's] the single best adventure⦠they've ever had," he said.
"Even just the walk in and out are spectacular; it's a beautiful sub
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