Piwniczka is a cave in Miętusie Turnie in the Miętusia Valley in the Western Tatras.

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.

[1] The main part of the cave is a 6-meter well accessed by a 2-meter, almost horizontal corridor that starts with a small entrance opening.

Near the opening, mosses and lichens grow on the damp walls.

[2] The cave was discovered by members of the PTTK Warsaw Speleoklub [Spelunking Club] in 1987.