Cave 1 is located at the far eastern end of the Tianlongshan caves site more than thirty meters from the the next cave, Cave 2. It is one of the larger caves, believed to be of the Northern Qi period. The facade still has part of the eave over the entrance porch showing architectural elements of posts and brackets and tiled roof carved in stone. The porch is about 3.5 meters wide and has an old stele carved on the right side. There was a dedicatory inscription carved on it, but only a few characters are now legible. The interior is a square chamber with niches on the back and side walls, each formerly containing a seated Buddha and two bodhisattvas.