Bhismaknagar

Bhismaknagar is an archaeological site near Roing in Lower Dibang Valley district, holding the remains of a fortified city linked to the Chutia kings, who ruled the Sadiya region from the 11th to the 16th century. Inscribed bricks suggest it served as the capital of King Lakshminarayana in the early 15th century, and the old city is identified with Sadhayapuri. Its present name, first recorded in a 1928 district gazetteer, traces back to a work by the 16th-century saint Sankardev.

The fortified area spreads over about 10 square kilometres. Walls of fired brick and granite, 4.5 metres high and 6 metres thick, guard the east, west and south, while the Mishmi hills close off the north. Only limited digging has been done, but it has exposed three tanks, two gateways and a central complex of three halls. Pottery, terracotta figures, plaques and decorated tiles have also been recovered from the site.