Gopal 1990, стр. 173 Gopal, Madan (1990). K.S. Gautam, ур. India through the ages. Publication Division, Ministry of Information and Broadcasting, Government of India. стр. 173.
asi.nic.in
The precise number varies according to whether or not some barely started excavations, such as cave 15A, are counted. The ASI say "In all, total 30 excavations were hewn out of rock which also include an unfinished one", UNESCO and Spink "about 30". The controversies over the end date of excavation is covered below.
