The twin hills of Kumargiri-Kumarigiri known as Khandagiri and Udaigiri served as the site of an ancient Jain monastery which was carved in verities of rock-cut caves like chambers built mainly for Jain monks around 1st -2nd century B.C. Some of the caves have beautiful carvingsof snakes and the lotus representing some of the auspicious Jain symbols that are extensively used here. King Kharavela has carved out the chronicles of his reign. Out of the rock-cut caves, Rani Gumpha (Queen’s cave) is the largest and double storied, ornately embellished with beautiful carvings. At present we find eighteen caves in Udaigiri and fifteen in Khandagiri. Many of these belong to the past Kharavela era.