Ancient Assam, known as Kamarupa, was ruled by powerful dynasties: the Varmanas (c. 350–650 AD), the Salstambhas (Xalostombho, c. 655–900 AD) and the Kamarupa-Palas (c. 900–1100 AD). In the reign of the Varman king, Bhaskar Varman(c. 600–650 AD), the Chinese traveler Xuan Zang visited the region and recorded his travels. Later, after weakening and disintegration (after the Kamarupa-Palas), the Kamarupa tradition was somewhat extended till c. 1255 AD by the Lunar I (c. 1120–1185 AD) and Lunar II (c. 1155–1255 AD) dynasties.[13] Ruled by three dynasties Varman, Pala and Salstambhas from their capitals in present-day Guwahati (Pragjyotishpura, Durjaya) and Tezpur (Haruppeswara) respectively, it covered the entire Brahmaputra river valley and, at times, North Bengal and parts of Bangladesh.