The Sri Lankan sambar deer or Indian sambar deer (Rusa unicolor unicolor) - it is also spelt "sambhur" or "sambur" - ගෝණා (gōṇā) in Sinhala, is a subspecies of sambar deer that lives in India and Sri Lanka. This subspecies is one of the largest sambar deer species with the largest antlers both in size and in body proportions. Large males weight up to 270–280 kg. Sambar live in both lowland dry forests and mountain forests. Large herds of sambar deer roam the Horton Plains National Park, where it is the most common large mammal. British explorers and planters referred to it, erroneously, as an Elk, leading to place names such as Elk Plain.