The Bardiya National Park also spelled Bardia, is a protected area in Nepal that was established in 1988 as Royal Bardia National Park. Covering an area of 968 km2 (374 sq mi) it is the largest and most undisturbed national park in Nepal's Terai, adjoining the eastern bank of the Karnali River and bisected by the Babai River in the Bardiya District. Its northern limits are demarcated by the crest of the Siwalik Hills. Natural boundaries to human settlements are formed in the west by the Geruwa, a branch of the Karnali River, and in the southeast by the Babai River.