Sine the Late Tang Dynasty, a square (or horse hoof shaped) altar is very often excavated at the center of the main hall of a large-sized cave, and behind the altar is a back screen connecting the ceiling of the cave. There are steps in the front of the altar, a group of colored stucco statues are placed on the altar, the Buddhist believers can walk around the altar to worship the Buddhist statues and show their homage. This type of cave is one of the main hall styles and is similar to the form of temples or even the secular palace. |