Barabar Hill Caves are one of the oldest surviving rock-cut caves in India. It dates back to 3rd century BC.
It is located in Makhdumpur region of Jehanabad district, Bihar, roughly 24 kilometers north of Gaya.
There are totally 7 caves in two hills – around 1.5 kilometers between them.
The entrance to the cave is of a ogee shaped arch, which was an important feature of rock cut architecture and decoration for centuries.
The caves were used by Ajivikas- a sect contemporary to Buddhism.