Dehra Dun . The earliest tangible evidence of the history of Dehradun dates back to 300 BC, as indicated by a rock inscription at Kalsi, discovered in 1860. This inscriptions located at the northern outskirts of the city are attributed to King Ashoka. In the inscription, there are 14 edicts carved on a rock and adjacent to these is the site where Raja Shilvarma of the Vrisheri dynasty made three horse sacrifices during his rule in the 3rd century BC.
