A considerable amount of literary and documentary information about Tang painting has survived, but very few works, especially of the highest quality. A walled-up cave in the Mogao Caves complex at Dunhuang was discovered by Sir Aurel Stein, which contained a vast haul, mostly of Buddhist writings, but also some banners and paintings, making much the largest group of paintings on silk to survive. These are now in the British Museum and elsewhere. They are not of court quality, but show a variety of styles, including those with influences from further west. As with sculpture, other survivals showing Tang style are in Japan, though the most important, at Nara, was very largely destroyed in a fire in 1949.