Makalu Barun National Park and Buffer zone area (previously conservation area) was established in 1992. This national park lies in the wilderness at the eastern border of Mt. Everest National Park and is more remote. Its altitude ranges from 1,000 m to more than 8,000 m. This park contains four of the five highest mountains in the world. Most of the northern part of this park includes dense forests, valleys of the Barun River, great waterfalls and deep gorges. It contains more than 3,000 flowering plants. Also about 67 species of medicinal plants and aromatic plants are to be found here. This park is the home of more than 50 species of animals and 400 species of birds.