The Nanda dynasty ruled in northern part of the Indian subcontinent during the 4th century BCE, and possibly during the 5th century BCE. In 326 BC, Alexander invaded India, after crossing the river Indus he advanced towards Taxila.
The rows of hearths were discovered at Atranjikhera and at Ahichchhtra both of which are in western Uttar Pradesh. The excavations show that these hearths were meant for communal feeding or for cooking the food of large families.