Dridzis is the deepest lake in the Baltic States. The Lake has characteristic elongated shape, many bays, nine islands; the biggest of them is the island Bernatu sala (13,9 ha). Lake makes curves just like a river. It makes many creeks and peninsulas. Maximum depth reaches 65,1 m. The length of the shore reaches 11 km. The widest place is 1 km. From the hills the great panorama of the Lake is seen. Dridzis is in the territory of a protected Nature Park.