Alatsee

47°33′39″N 10°38′22″E / 47.56083°N 10.63944°E / 47.56083; 10.63944TypemeromicticPrimary inflowsgroundwaterPrimary outflowsFaulenbachBasin countriesGermanyMax. length490 m (1,610 ft)Max. width290 m (950 ft)Surface area12.00 ha (29.7 acres)Average depth15.3 m (50 ft)Max. depth32.1 m (105 ft)Water volume1,840,000 m³ (65,000,000 cu ft)Shore length¹1.3 km (0.81 mi)Surface elevation868.0 m (2,847.8 ft)¹ Shore length is not a well-defined measure.

Alatsee is a meromictic lake in Ostallgäu, Bavaria, Germany. At an elevation of 868.0 m, its surface area is 12.00 ha. This lake supposedly holds "Hitler's gold". Many divers have died or disappeared mysteriously in this lake due to the toxicity of the organisms living in this lake. These organisms create the "blood cloud " that occurs quite abundantly throughout the year.