The antiquity of Assam dates back to several thousand years. Assam finds mention as ‘Pragjyotishpur’ in the Ramayana, Mahabharata, Puranas and other ancient Indian scriptures. Later, the kingdom was named ‘Kamrupa’, which also finds mention in several scriptures. Nidhanpur and Doobi inscriptions talk about the kings of the dynasty of Naraka, Bhagadatta and Vajradatta and their descendants, who ruled for 3000 years. The Allahabad inscription of Samudragupta mentions Kamrupa as a frontier territory.