Horton Plains National Park is a protected area in the central highlands of Sri Lanka. It is a popular tourist destination and is situated 32 kilometers from Nuwara Eliya. 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. The sheer precipice of World's End and Baker's Falls are among the tourist attractions of the park.
Nearly 750 species of plants belonging to 20 families have been recorded from the park. The forest canopy reaches the height of 20 meters and features Calophyllum walkeri, forming communities with varieties of Myrtaceae species such as Syzygium rotundifolium, and S. sclerophyllum, and Lauraceae members including Litsea, Cinnamomum, and Actinodaphne speciosa. The undergrowth layer is characterized by Strobilanthes spp. The thickness of the Strobilanthes vegetation hinders the development of herb layer. Dwarf bamboo species such Indocalamus and Ochlandra also found in the undergrowth layer. Nearly 54 woody plant species have been recorded from the park, of which 50 percent are endemic to Sri Lanka.
The vertebrate fauna of the region includes 24 species of mammals, 87 species of birds, nine species of reptiles and eight species of amphibians. At present, the largest and the most commonly seen mammal is the Sambar Deer. Other mammal species found in the park include Kelaart's Long-clawed Shrews, Toque Macaques and Purple-faced Langurs.