2021-7-18 · (geology) A type of land formation, usually with many caves formed through the dissolving of limestone by underground drainage. 1978, M. M. Sweeting, "The Karst of Kweilin, Southern China," The Geographical Journal, vol. 144, no. 2, p. 200: In the time available to us on our geomorphological tour we were not able to see the higher and younger karsts ...