Aptly-named Lake Disappear is located inside a large, flat plain at the bottom of a valley, surrounded by limestone, known as a polje. The lake is described by geologist Bruce Hayward as possibly being the country’s largest and longest polje lake. Two million years ago, a lava flow dammed the valley where Lake Disappear lies. After periods of heavy rainfall, Lake Disappear can be up to 15m deep. According to Hayward, Lake Disappear isn’t the only land formation of this type in Aotearoa.

Source: Stuff October 23, 2022 06:40 UTC