Photograph of the Longmen Caves in Luoyang, China. A large entrance into the cave is located in the right foreground. Small niches fill the hillside around the opening. Two people are visible on the ground in front of the opening.
Photograph of the cave entrance into Folded Brocade Hill in Guilin, China. Numerous people are visible in front of and within the cave entrance. The rocky hillside is visible in the top foreground. Trees grow out of the hillside.