Horton Plains National Park was designated a national park in 1998. This park is a protected area in the central highlands of Sri Lanka and is covered by montane grassland and cloud forest. This plateau at an altitude of 2,100–2,300 metres is rich in biodiversity and many species found here are endemic to the region.
Sri Lankan Post issued the stamp set comprises of 4 stamps and one souvenir sheet that depicts species of Horton Plains National Park in Sri Lanka on September 07, 2010. The species depicted are Sri Lanka Whistling thrush, Rhino-horn lizard, Sri Lankan Sambar deer, and Purple-faced leaf monkey.
