The 50 caves that house the ancient archaeological site contain rare oil paintings. Buddhist monks are assumed to be the painters of the wonderful works of arts discovered. Most of the paintings show the Buddhist mythology. The cave was covered with ancient frescoes. By the discovery of these ancient artifacts, it was argued that oil painting was used even back then. The art works are tested reveling that it was made by mixing powdered inorganic materials mixed with oil or glue. From a destruction of one heritage structure, something more bigger and better was revealed.