Stock photo collection of Sumatra images. Sumatra is one of the largest Islands of the Indonesian Archipelago in Southeast Asia. Famous for its rainforest and wildlife where flora and fauna abounds with Orangutans, Rhinoceros and the Giant Rafflesia plant to name but a few. Also well known for smoldering volcanoes such as Gunung Sinabung and Gunung Sibayak and the huge Lake Toba (Danau Toba) and Lake Maninjau (Danau Maninjau) which themselves are formed from an ancient volcanic eruptions. The indigenous cultures of Batak peoples and in the far north Acehnese peoples which also inhabit Sumatra make it an Indonesian Island rich in cultural diversity and natural wealth.