Interest in brines in extreme and cold environments has recently increased after they have
been found on Mars. Those brines can be potential new subsurface habitats for peculiar
ecosystems. In the McMurdo Dry Valleys of the Antarctic, the best analogue for Mars
conditions, only a few cases of brines have been identified in some perennially frozen lakes
and in one case in an underground aquifer. Here, we present the occurrence of pressurized
brines in a shallow perennially ice-covered lake south of 70° S in an ice-free area of Victoria …