About Sumatra: Sumatra is one of Indonesia's largest islands, straddling the equator and dotted with active volcanoes. Its rainforests shelter critically endangered Sumatran tigers, orangutans, and rhinos found nowhere else, and its forest floor is home to the largest single flower in the world. The World's Largest Flower — Sumatra is home to Rafflesia arnoldii, whose blooms can grow over a meter wide.

Location: Western Indonesia · Area: 473,481 km² (182,812 mi²) The sixth-largest island in the world. · Population: About 50 million people · Highest Point: Mount Kerinci, 3,805 m · Wildlife: Tigers, orangutans & rhinos · Equator: Crossed directly by the equator · Volcanoes: One of the most active regions on Earth · Largest City: Medan Sumatra's largest and busiest city. · Continent Rank: 6th-largest island on Earth