Dolines (or sinkholes) are funnel-shaped surface depressions. These large dolines on Tākaka Hill in north-west Nelson are being used for an outdoor dance party known as The Gathering, on New Year’s Eve 1998/99. Dolines form when water sits in a hollow for a prolonged period. The water slowly dissolves the rock beneath, making the depression deeper. Dolines can be the first step in the formation of caves. There are large areas of dolines on the Canaan Downs on Tākaka Hill, and in the King Country around Waitomo.
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Photograph by Bernard Smith
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