Explanation:

 Chirand is a archaeological site in the Saran district of Bihar, India, situated on the northern bank of the Ganga River. It has a large pre-historic mound which is known for its continuous archaeological record from the Neolithic age (about 2500–1345 BC) to the reign of the Pal dynasty who ruled during the pre-medieval period. The excavations in Chirand have revealed stratified Neolithic, Chalcolithic, and Iron Age settlements, and transitions in human habitation patterns dating from 2500 BC to 30 AD.