At 36,125 square kilometres (13,948 sq mi), the country is larger in size than Taiwan, Belgium, or the U.S. state of Maryland. This small, tropical country lies at a low altitude; its highest point is 300 metres (984 ft). The interior is savanna, and the coastline is plain with swamps of Guinean mangroves. Its monsoon-like rainy season alternates with periods of hot, dry harmattan winds blowing from the Sahara. The Bijagos Archipelago extends out to sea.