and in places extremely rugged.A spine of mountains, the New Guinea High Lands runs the length of the island of New Guinea, forming a populous highlands region mostly covered with tropical rain forests.Dense rainforest can be found in the lowland and coastal areas as well as very large wet land areas surrounding the Sepik and fly rivers. This terrain has made it difficult, for the country to develop trnsportation infrastructure . In some areas, airplanes are the only mode of transport. The highest peak is Mount Wilhelm at 4,509 metres Papua New Guinea is surrounded by coral reefs which are under close watch to preserve them.
The country is situated in the Pacific Ring of fire, at the point of collision of several tectonic plates . There are a number of active volcanoes, and eruptions are frequent. arthquakes are relatively common, sometimes accompanied by tsunamis.The main land of the country is the eastern half of the New Guinea island, where the largest towns are also located , including the capital Port Morseby and Lae.Papua New Guinea is one of the few regions close to the equator that experience snowfall , which occurs in the most elevated parts of the mainland.