Udayagiri and Khandagiri Caves, formerly called Kattaka Caves or Cuttack caves, are partly natural & partly artificial caves of archaeological, historical and religious importance near the city of Bhubaneswar in Odisha, India. The caves are situated on two adjacent hills, Udayagiri and Khandagiri mentioned as Kumari Parvata in the Hathigumpha inscription. They have a number of finely and ornately carved caves built during the 1st century BCE. It is believed that most of these caves were carved out as residential blocks for Jain monks during the reign of King Kharavela. Udayagiri means "Sunrise Hill" and has 18 caves while Khandagiri has 15 caves. The caves of Udayagiri and Khandagiri, called lena or leṇa in the inscriptions, these were taken out mostly during the reign of Kharavela for the abode of Jain ascetics. The most importance of this group was Ranigumpha in Udayagiri which is a double storeyed monastery. Other important caves include Hathi Gumpha, Ananta Gumpha, Ganesha Gumpha, Jaya Vijaya Gumpha, Mancapuri Gumpha, Bagha/Byaghra/Vyaghra Gumpha and Sarpa Gumpha. The Archaeological Survey of India (ASI) has listed that Udayagiri and Khandagiri Caves in the list of "Must See" Indian Heritage. The Udayagiri and Khandagiri Caves are listed as one of the Adarsh Smarak Monument by ASI. B. M. Barua, based on a reading of line 14 of the Hathi Gumpha inscription, declared that a total of 117 caves were excavated by Kharavela and others on the Kumari hill (Udayagiri). Marshall has counted more than 35 caves in both the hills, while M.M. Ganguli has enumerated only 27 caves. The number of existing caves at Udayagiri is 18, while Khandagiri has 15. The local names of the existing caves are listed below, numbered according to the enumeration of the Archaeological Survey of India. In Udayagiri, Hathi Gumpha (cave 14) and Ganesha Gumpha (cave 10) are especially well known for their historically important sculptures and reliefs. Raninka Na'ara (Queen's Palace Cave, Cave 1) is also an extensively carved cave and elaborately embellished with sculptural friezes.