
Grotto 4 of the North Xiangtangshan Grottoes is also named the Central Grotto or Shijia (Sakya) Grotto. It is located in the central area and was constructed during the Northern Qi dynasty (550–577), although the front part of the grotto was rebuilt by a later generation. There is a Bodhisattva on either side of the entrance. The arched entrance is decorated with patterns of honeysuckle and stringed beads.
In the niche on the west side of the central pillar, there is a Buddha, two disciples, and two Bodhisattvas. The Buddha sits in full lotus position with a monastic robe covering both shoulders. Mountain censers and two Heavenly Kings are carved on the base of the altars on the north, south, and west sides of the central pillar. The east side of the pillar is adorned with an incense burner, couching lions, and a monk making an offering. Additionally, there is a niche with a standing Bodhisattva cut into both sides of the corridor.
For more details, go to the Encyclopedia of Buddhist Arts: Caves Mo-S, page 1283.