Piwniczka is a cave in Miętusie Turnie in the Miętusia Valley in the Western Tatras. It is located within Tatra National Park in Poland. The entrance to it is located on the north-west slope of Mała Świstówka, above the Miętusia Wyżnia Cave, at an altitude of 1,440 meters above sea level. The length of the cave is 9 meters and its height is 7 meters.