The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.
(Kuu, Bahardan), a subterranean lake in the foothills of the Kopet Dagh. The lake is located in the deep Durun Cave. Area, approximately 3,000 sq m, maximum depth, 13 m. The water smells strongly of hydrogen sulfide, and its temperature is 35°-37°C.
The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.