Krokų Lanka is the only lake of marine origin in Lithuania and the largest lake in the Šilutė district municipality. It is located in the Nemunas Delta Regional Park on the Baltic Sea shore near Nemunas Delta and Ventė Cape. It covers a territory of 788 ha. Aukštumala bog, covering 3018 ha and used for peat production since 1882, is located just north of the lake and Mingė village is located on the western bank.