Samar is the third largest island in the Philippines, after Mindanao and Luzon islands. It is located next to Leyte Island and the two are joined by a bridge.
The region is the caving capital of the Philippines, being home to many cave systems. Interspersed with this cave systems are waterfalls, rivers and underground rivers inside caves. Hence, the region is a destination for extreme mountaineering adventures such as spelunking and trekking.
Most of Samar Island is rainforest and about a third of the island is protected by the Philippine government, as part of the Samar Island National Park. There are a lots of caves in the mountains forming the island's interior, and the province of Eastern Samar has many beaches