Cave temples at sites such as Ajanta, Ellora, Elephanta, and Badami are notable not just for their antiquity and religious significance but also for the ingenious, sophisticated techniques used to excavate them from the sides of mountains. Art historian Robert DeCaroli examines the history of these Jain, Buddhist, Hindu, and Ajivika temples and monasteries, how they were made, and how they are being protected today. (World Art History Certificate elective, 1/2 credit)