Sumatra is an island located in western Indonesia. It is the sixth-largest island in the world and is home to over 50 million people. The island is known for its diverse wildlife, including tigers, elephants, and orangutans. Sumatra is also home to some of the world's most active volcanoes, including Mount Sinabung and Mount Merapi. Sumatra is a popular tourist destination due to its stunning beaches, lush rainforests, and unique culture.