It’s the sixth largest island in the world encompassing a land area of 443,065.8 square kilometer. Sumatra is also known as Andalas, Percha and Suwarnadwipa ( in Sankrit , menaing, ” the Gold island”). The Eastern coast of the island consists of marshland fed by large rivers. The mountain range spawning from the north to the south forms the lofty Bukit Barisan along the west side of Sumatra. Large lakes also dot throughout the island.
Weh Island Sea Garden, Lake Toba, Mentawai island, Bukit Lawang Mount Leuser National Park, Way Kambas national Park. Bukit Lawang Tourism area is included in the Mount Leuser National Park, Langkat Regency, North Sumatra housing a rehabilitation centre for nearly extinct orangutan.
Source : Ministry of Tourism and Creative Economy Republic of Indonesia