Indonesia is an archipelago of more than 17,000 islands, and Sumatra is the second large largest for these. The islands were formed by volcanic activity, and their mineral-rich-soil which is fortified with organic ash and diverse plant life. It has helped to make Indonesia’s coffees among the most famous and celebrated around the world. Indonesia Sumatra Mandleling is grown on the slopes of Mount Leuser, a volcano near the Port of Padang, in the Batak area of Aceh. The Leuser Range is said to be home to one of the most ancient and bio-rich ecosystems on the planet. Mandleling coffees are named in honor of the Mandailing people, an ethnic group in the Batak area who goes by this second spelling.