two detials of wall painting conditions Wall Paintings at Mogao Grottoes
 

Comparison of the wall painting condition between the east and west ends of the cave. Two details of similar scenes illustrating seated musicians taken from the east and west ends of the south wall show the significan difference in condition: the painting at the west end, i.e. toward the back of the cave, are in deteriorated condition (loss of paint layer and color change) while the painting on the east end, i.e. toward the entrance of the cave are in good condition. Credit: Francesca Piqué.