High-altitude, mossy cloud forest on the rim of Danau Tujuh, a crater lake in Kerinci-Seblat National Park, a Biosphere Reserve and major conservation area of 1.5 million hectares in the high Bukit Barison Range, Sumatra, Indonesia. The reserve is extremely rich in flora and fauna, including the world's largest flower and the world's tallest flower. Nearby is Gunung Kerinci, an active volcano and the highest peak in Sumatra at 3800 meters above sea level.