Kolhua is a famous Buddhist excavation site situated approximately 65 km North-West of Patna. The excavations have revealed the famous Ashokan Pillar having a statue of lion on the top. Excavations also revealed, many other articles related to Buddhism.
Emperor Ashoka built The Lion Pillar at Kolhua. It is made of a highly polished single piece of red sandstone, surmounted by a bell shaped capital, 18.3 m high. A life-size figure of a lion is placed on top of the pillar. There is a small tank here known as Ramkund. This pillar beside a brick stupa at Kolhua commemorates Buddha's last sermon.