Image: Ruatapu Cave
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Description: Ruatapu Cave, at the Orakei Korako geothermal area, is one of only two caves in the world known to exist in a geothermal field. The cave extends 45 metres, with a vertical drop of 23 metres, to a shallow pool of clear, sulfate-rich, warm acid water. The pool’s chemical composition gives it the ability to clean jewellery.
Title: Ruatapu Cave
Credit: Own work
Author: Avenue
Usage Terms: Creative Commons Attribution-Share Alike 3.0
License: CC BY-SA 3.0
License Link: https://creativecommons.org/licenses/by-sa/3.0
Attribution Required?: Yes
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