Estonia lies on the eastern shores of the Baltic Sea immediately across the Gulf of Finland, on the level northwestern part of the rising East European platform between 57.3° and 59.5° N and 21.5° and 28.1° E. Average elevation reaches only  and the country's highest point is the Suur Munamägi in the southeast at . There is  of coastline marked by numerous bays, straits, and inlets. Estonia's number of islands and islets in the Baltic Sea is estimated at some 2,222, and the country has 2,355 including those in lakes. Two of them are large enough to constitute separate counties: Saaremaa and Hiiumaa. A small, recent cluster of meteorite craters, the largest of which is called Kaali is found on Saaremaa, Estonia.