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| Lake Tsagan-Khak | |
|---|---|
 Sentinel-2 image (2021) | |
  Lake Tsagan-Khak | |
| Location | Republic of Kalmykia |
| Coordinates | 46°00′05″N 44°01′29″E / 46.00139°N 44.02472°E |
Tsagan-Khak Lake (Russian: о́зеро Цага́н-Хак) is located in the Russian Republic of Kalmykia. It is the third-largest lake in the republic (19,9 km²). Several industries are attached to the lake, including fishing, textiles, and plastics manufacturing. The lake is well known throughout southern Russia for its nude beaches[unreliable source?].