Eastern Arc Mountains Information Source provides information and coordination for institutions and organizations working in the forested systems of the Eastern Arc Mountains.

The Eastern Arc Mountains are a chain of mountains in Kenya and Tanzania that are influenced by the Indian Ocean. The mountain chain is a series of isolated mountains, which have been heavily covered by forests. Much of the original forests, especially at the more accessible or lower elevations, have been converted for agricultural crops. These mountains are recognized as one of 24 globally important "hot spots" for forest biodiversity according to Conservation International.

These mountains also serve as water catchments for urban areas such as Dar es Salaam, Tanga, and Morogoro, Tanzania. The forests provide firewood, medicinal plants, lumber, and other forest-related products. Local villagers depend on these forests to live. In place of closed mountain forests is now a patchwork of forest fragments and agriculture.