North Poland's coastline extends along the Baltic Sea and includes coastal lakes and dunes. Inland, the terrain includes the North European Plain and hilly moraine landscapes dotted with lakes. Central and southern Poland include the Silesian and Masovian regions marked by river valleys, and mountainous areas like the Sudetes and Carpathians, home to Poland's highest peak. Poland has over 10,000 lakes and is crossed by several long rivers flowing into the Baltic Sea. The climate is temperate overall with oceanic influence in the north and west and continental influence in the south and east.