By origin, Sniardwy is a recess filled with water from melting glaciers. Sniardwy occupies an area of 106.6 square kilometers. It is 22.1 km long, 13.4km wide and its maximum depth is 23 m. The shore is rugged. The lake is lined with pine forests and small sandy beaches or swamps. Many beaches are hidden inside bushes, though. Since the Poles are tolerant to free camping, you do not have to leave your beach for the night. There are eight islands within the lake, of which the largest are Szeroki Ostrów, Czarci Ostrów, Pajęcza and Kaczor. The lake is interconnected with other lakes with canals and the network or the region is called the Great Masurian Lakes. Sniardwy is an ideal place for summer holiday. It is very popular among fishermen and lovers of water sports. You can rent a boat but you should be aware of the fact that there are large boulders at the bottom of the lake.