Layers of sacred reflections
One theme that continually echoes through the world-renowned Mogao Caves in Dunhuang, Gansu province, is the passage of time. Tour guides often point out that the black elephant and black horse depicted in two frescoes — illustrating the mythical birth of Shakyamuni, the historical founder of Buddhism, and his departure from a life of luxury in pursuit of enlightenment — were originally painted white. Their darkened appearance today is the result of oxidation over a millennium.