Dang District (Nepali: दाङ जिल्ला) is the district of Lumbini Province located in the Inner Terai of midwestern Nepal. Deukhuri valley of the district is the capital of the province and is the second largest valley of Asia surrounded by Sivalik Hills and Mahabharata Range.[2] The district headquarter Ghorahi is the seventh largest city and the largest sub-metropolitan city of Nepal. Tulsipur sub-metropolitan city, the second largest city of Dang, is a major transportation hub with an extensive road and air networks. The district covers an area of 2,955 km2 and has a population of 548,141 (2011 census).