Snezhanka (Bulgarian: Снежанка, "Snow White") is a show cave in the Rhodope Mountains, some 5 km away from the town of Peshtera, southern Bulgaria. It was discovered in 1961. To reach it requires a half an hour uphill. Some of the most beautiful cave formations in Bulgaria can be seen inside. The cave is 145 metres long, with a constant annual temperature of 6°C, and was formed by the Novomahlenska River 3.5 million years ago.