Cryptodepression

A cryptodepression is a lake which has its water surface above sea level and its deepest point below sea level. The term is derived from the Ancient Greek word κρύπτoς ('hidden') and depression.

A cryptodepression is often due to creation of a rift valley or a glacial lake.

Lakes are often long and narrow. Further, the surrounding landscape and the shore of the lake can be very steep.

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