The majority of the islands are forested and mountainous. The Tanimbar Islands are dry and hilly, while the Aru Islands are flat and swampy. Mount Binaya (3027 m) on Seram is the highest mountain. A number of islands, such as Ternate (1721 m) and the TNS islands, are volcanoes emerging from the sea with villages sited around their coasts. There have been over 70 serious volcanic eruptions in the last 500 years and earthquakes are common.