Horton Plains National Park is a national park in the central highlands of Sri Lanka that was designated in 1988. It covers an area of 31km² and borders Thotupalakanda Nature Reserve. It is located at an elevation of 2,100–2,300 m and encompasses montane grassland and cloud fores. Temperature fluctuates between 0'C and 27'C. It is rich in biodiversit…Horton Plains National Park is a national park in the central highlands of Sri Lanka that was designated in 1988. It covers an area of 31km² and borders Thotupalakanda Nature Reserve. It is located at an elevation of 2,100–2,300 m and encompasses montane grassland and cloud fores. Temperature fluctuates between 0'C and 27'C. It is rich in biodiversity and many species found here are endemic to the region.