The Horton Plains National Park is covered by montane grassland and cloud forest. This plateau at an altitude of 2,100–2,300 metres (6,900–7,500 ft) is rich in biodiversity and many species found here are endemic to the region.
The Horton Plains are the headwaters of three major rivers in the country- the Mahaweli, Kelani, and Walawe. The plains’ vegetation is grasslands interspersed with montane forest and includes many endemic woody plants. Large herds of Sri Lankan Sambar deer feature as typical mammals and the park is also an important Bird Area with many species not only endemic to Sri Lanka but restricted to the Horton Plains. The sheer precipice of World’s End and Baker’s Falls are among the tourist attractions of the park.