A cryptodepression is a depression in the Earth's surface that is below mean sea level, and which is filled by a lake.[1][2] The term is derived from the Ancient Greek word κρύπτoς ("hidden") and depression.
^Neuendorf, K.K.E.; Mehl, Jr., J.P.; Jackson, J.A. (2005). Glossary of Geology (5th edition). Alexandria, Virginia: American Geological Institute. p. 155.