HISTORY OF KHANDAGIRI: The  Archaeological Survey of India (ASI), under the Ministry of Culture, is the premier organization for the archaeological researches and protection of the cultural heritage of the nation. Maintenance of ancient monuments and archaeological sites and remains of national importance is the prime concern of the ASI. Besides it regulate all archaeological activities in the country as per the provisions of the Ancient Monuments and Archaeological Sites and Remains Act, 1958. It also regulates Antiquities and Art Treasure Act, 1972.

For the maintenance of ancient monuments and archaeological sites and remains of national importance the entire country is divided into 24 Circles. The organization has a large work force of trained archaeologists, conservators, epigraphist, architects and scientists for conducting archaeological research projects through its Circles, Museums, Excavation Branches, Prehistory Branch, Epigraphy Branches, Science Branch, Horticulture Branch, Building Survey Project, Temple Survey Projects and Underwater Archaeology Wing.

Udayagiri and Khandagiri Caves (Oriya: ଉଦୟଗିରି ଓ ଖଣ୍ଡଗିରି ଗୁମ୍ଫା) are partly natural and 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 asKumari Parvat in the Hathigumpha inscription. They have a number of finely and ornately carved caves. 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, were dug out mostly during the reign of Kharavela for the abode of Jaina ascetics. The most important of this group is Ranigumpha in Udayagiri which is a double storeyed monastery.