Purana Qila excavations reveal the pre-Mauryan era settlement.
The findings include shards of Painted Gray Ware pottery which are usually dated to around 1200 BC to 600 BC.
The new excavations have also found remains of a 900-year-old Vaikuntha Vishnu from the Rajput period.
A terracotta plaque of Goddess Gaja Lakshmi from the Gupta period, the structural remains of a 2,500-year-old terracotta ring well from the Mauryan period found here.
They found a well-defined four-room complex from the Sunga-Kushan period dating back to 2,300 years ago, besides beads, seals, copper coins and a bone needle.