The Institute undertook archaeological explorations soon after its inception in order to have a broad view of the antiquity and settlement history of the different sub-regions of Bihar.
The KPJRI has recently launched an ambitious programme to document the antiquarian remains of Bihar which include monuments, mounds, sculptures, potsherds and other antiquities. Since July, 2007, the institute has explored and documented about 7000 antiquarian find-spots.
This project has been noticed by historians and archaeologists all over the country. Potsherds are an important marker of archaeological culture. In the process of documenting historical sites, the potsherds collected from more than 3000 sites have been stored at KPJRI, which can be developed as a museum of potsherds. This would help archaeologists in identifying the archaeological cultures of the different regions of Bihar.