Dehradun also sometimes spelled Dehra Doon, is the provisional capital city of the Uttarakhand state (earlier called Uttaranchal) in India, and the headquarters of Dehradun District.
It is located in the Doon valley, 246 kilometres north of India's capital New Delhi and the Delhi metropolitan area. The district is surrounded by the Himalayas in the north, Sivalik Hills in the south, the river Ganga in the east, and the river Yamuna in the west. The water divide of Ganga and Yamuna passes through the city.
It is also located on the northwestern side of the fertile Gangetic plains of India. Before the creation of Uttarakhand on November 9, 2000, Dehradun was a part of Uttar Pradesh. Neighbouring cities and towns include Haridwar, Rishikesh, Roorkee, Mussoorie and Saharanpur.
The products that have made Dehradun known within India are "Dehradooni basmati rice", bakery products and lychee.