SamdrupJongkhar is the gateway to Eastern Bhutan. It is located in the southeastern part and shares borders with the Indian state of Assam. It is the largest urban center in Eastern Bhutan. It lies at elevations ranging from 200m to 3,500m. In the earlier past, many British Political Officers stationed in Sikkim took the route from Samdrup Jongkhar to enter Bhutan. Historically it was administered by the Gyadrung stationed at Dewangiri. Today the road from Trashigang to SamdrupJongkhar, completed in the 1960s, enables the eastern half of the country to access and benefit from trade with the south as well as across the Indian border as in the past where it was the main trading center for the Bhutanese. SamdrupJongkhar is a convenient exit town for tourists who have arranged to visit the neighboring Indian state of Assam.