The Bled Lake came into existance when the Bohinj Glacier moved away. It is 2120 m long, up to 1380 m wide and it is of the tectonic origin, After the last Ice Age, the Bohinj Glacier deepend its natural tectonic hollow and gave it its present form. When the ice melted the basin was filled with water. The lake has no considerable affluents except some streams. The thermal springs in the northeast part are captured in three swimming pools: at the Toplice Grand Hotel, Park Hotel and Golf Hotel. The beauty of the lake is stressed by the island on the west side. The temperature of the lake reaches up to 25°C in the summer and gets ice covered in winter.