Jabal Moussa is an outstanding Biosphere Reserve located in Keserwan-Jbeil area.
The Reserve covers an area of 6500ha at an altitude ranging between 350m and 1700m ; and extends 500m beyond the rivers of Nahr Ibrahim to the north and Nahr el Dahab to the south.
Jabal Moussa, which overlooks the Mediterranean Sea to the west, reflects a true mosaic of ecological systems. These systems broadly represent the biogeography region of the evergreen sclerophyllic shrubs and forests within Mediterranean biomes. A dominant feature of the biosphere reserve is its pristine world of steep, verdant mountainsides rising from a river lined with cool aromatic sycamore trees, to reach summits of statue-like karstic rocks.
The Biosphere Reserve is divided into a core area mainly dedicated to expert visits and research, a buffer zone where more ecotourism activities take place, and a transition zone that involves human activities and human use of land. The transition zone covers around half of the biosphere reserve's area, and its predominant land uses include: forest management, charcoal production, traditional agricultural activities, fruit trees plantation, grazing, and seasonal recreation.