Sadiya is a town in Tinsukia district, Assam. It was the capital of the Chutia Kingdom and after the downfall of the kingdom it became the seat of the Sadiya-khowa-Gohain of the Ahom kingdom. Extensive remains of buildings and fortifications built during the rule of the Chutias near Sadiya still point to the importance of the region in the past. Historically Sadiya referred to the Chutiya kingdom which included at times the districts of Lakhimpur, Dhemaji and Tinsukia. It is claimed to be the center of development of the eastern Assamese dialects, the inscription here are written in a Tai script. Its stands on a grassy plain, almost surrounded by forested Himalayan mountains, on the right bank of Lohit River which is locally (but erroneously) considered the main stream of the Brahmaputra River. The deepest point of the Brahmaputra River is located near this village. It is famous for a flower named satphul (the word means "blessing" or a "desert flower"), which is much like Jasmine.
There are three possible routes from Sadiya to Tibet. The first route is through the valley of Dihang or Tsang Po. The second one through the Dibang valley and the third route through the Lohit valley which leads to Zayul province, the extreme south-eastern province of Tibet. It acted as a trade route which passed through the Shan state of Mongkawng and then finally reaches to Yunnan.
