the Carniolan polymath Johann Weikhard von Valvasor described the lake in his letter to the Royal Society, an excerpt of which was published in the Society's Philosophical Transactions in December that year. He proposed a model of filling and emptying the lake, based on Cartesian mechanics. The first to accurately describe the functioning of Lake Cerknica was Tobias Gruber in 1781, followed in 1784 by Belsazar Hacquet. Gallery References External links Lake Cerknica at official Slovenia travel guide Lakes of Inner Carniola Intermittent lakes Lake Lake Wetlands in Inner Carniola Natura 2000 in Slovenia Ramsar sites in Slovenia Karst fields of Slovenia Karst lakes