sentences:  In Hindu temples, their role is envisioned as symbolically radiating the light and splendour of the central icon in its sanctum.Alternatively, they are described as providing a window for the deity to gaze out into the world.Like the whole of the classic chaitya, the form originated in the shape of the wooden thatched roofs of buildings, none of which have survived; the earliest version replicating such roofs in stone is at the entrance to the non-Buddhist Lomas Rishi Cave, one of the man-made Barabar Caves in Bihar.