Answer: Ground-Penetrating Radar (GPR)
Notes: A Ground-Penetrating Radar (GPR) survey was conducted in Patna's Gulzarbagh area by a team from IIT Kanpur, revealed possible remains of ancient Pataliputra, the Mauryan capital. The survey suggests the presence of a brick wall and other structures from the period between 490 BC and 180 BC. These findings are expected to lead to further excavations by the Archaeological Survey of India, which would uncover significant historical artifacts and structures from the Mauryan era.
