Q. Which rock-cut cave site in India features the earliest example of the "chaitya arch" (chandrashala)?
Answer:
Barabar Caves
Notes: The Barabar Caves in Bihar, built during the Maurya Empire in the 3rd century BCE, contain the earliest chaitya arch (chandrashala), notably in the Lomas Rishi Cave. They are the oldest surviving rock-cut caves in India and display the characteristic Mauryan polish on granite surfaces.