The Mujib Biosphere Reserve is the lowest nature reserve on Earth, 410 meters below sea level. Its rugged and spectacular mountains border the Dead Sea coast and are dissected by several river-filled canyons that offer the best river and adventure hikes in Jordan. Over 300 species of plants, 10 species of carnivores and numerous species of resident and migratory birds have been recorded. Some of the mountain and valley areas are difficult to reach and offer safe havens for rare species of cats, mountain goats (Ibex) and other mountain animals.