The fourth largest National Park, Mount Elgon is situated in Eastern Uganda approximately 100 km northeast of Lake Victoria, and borders Kenya. The majority of the park is situated above 2000m. It offers a lush mixture of grassland and moorland habitats, and rich montane forests, which provide for the birds and wildlife. It also encompasses the largest base of any extinct volcano in the world. In the past, Elgon was known as the "Mountain of Illusion" because several hiking groups had been lost, and because no one could determine its highest point, which has now been determined - as Wagagai, which stands at 4321m.