The Larsemann Hills, located at 69°17'~69°28'S and 7Acl00'~76°30'E, consists of a series of granite and gneiss peninsulas and islands extending into Prydz Bay. The hilly area is about 200 km², with a lake area of mere 6.3 km². In the hills are over freshwater lakes ranging from small ponds less than 1m deep to glacial lakes up to 0.13 km² and 38m deep. Lakes in this region distribute unevenly, i. e., there are 81 lakes in the Storness Peninsula and 36 lakes in the Mirror Peninsula. The lake density of the hills decreases from west to east. The lake basin has its own characteristics, such as:the ratios of the lake area to catchment area are over 1.0 in several lakes. and the undevelopment of lakeshore means that they belong to young lakes. The lakes are generally shallow ponds and snow-and-ice-deepened basins that thaw (or partially thaw) from December to February, or in some cases, remain permanently frozen. Sedimentary accumulations in the lakes are thin, and the dominant sediment type is coarse gravel in a number of lakes. Fluvioglacial sediments and aeolian sediments are the main composition, while pure lacustrine sediments are very thin and rare. Variations m the characteristics of the lakes reflect deglaciation history, proximity to the continental ice margin and exposure to the ocean. The main source of the water comes from snow and ice melt, so that the water temperature usually changes within a narrow range of 0.2℃/m, but near the beds of some lakes does a sharp increase occur. The water has near neutral pH values. The ionic order is Na⁺ > Mg²⁺ > Ca²⁺ > K⁺.