Prášil Lake.

Prášilské lake is one of the five alum lakes in the Czech territory of Šumava. It lies five kilometers from Prášil at an altitude of 1080 meters and you can reach it by following the red tourist sign. It was formed by a glacier about ten thousand years ago. Its area is 4 ha and it is up to 15 m deep. The Jezerní stream flows from it, which flows into Křemelná. It is a pleasant resting place on the way to Poledník.