Red lake Croatia

Red lake Croatia in known karst lake, situated in area which is 1,5 km far off town Imotski. Red lake Croatia has surface of 0,4 km2, width of 200 m, depth to 300 m and shape of Well with high steep clifs. Its name has got after red rocks on its steep clifs, which have got that colour for presence of iron and manganese. Red lake Croatia has been formed by collapse of upper earthen vault and flow of underground water into formed large sinkhole. Red Lake Croatia hides many secrets. For now, it has been discovered that its bottom is expanding into deeper underwater cave, 280 m below earth surface, so with 480 m it is deepest lake in Europe. Reserch teams have calculated that in it, there are about 16.000.000 m3 of clear drinking water, which never dries up. One more secret has been discovered, that bottom of Red Lake is 6 m below sea level. For its hydrological and morphological specificities, in year 1971. it was proclamed as natural phenomenon. Only similar cryptodepression in Republic of Croatia has lake Vrana on Cres island, with bottom which is 62 m below sea level.