In the seventh century, this area was known as Sudhanagara and was described by the Chinese traveller Huen Tsang. Sudhanagara later came to be recognized as Kalsi. Edicts of Ashoka have been found in the region along the banks of the river Yamuna in Kalsi indicating the wealth and importance of the region in ancient India. In the neighbouring region of Haripur, ruins were discovered from the time of King Rasala which also reflect the region's prosperity. Before the name of Dehradun was used, the place is shown on old maps as Gurudwara (a map by Webb, 1808) or Gurudwara (a map by Gerard, 1818). Gerard's map names the place as "Dehra or Gurudwara". Surrounding this original Sikh temple were many small villages that are now the names of parts of the modern city.