Gansu Dunhuang
You have found the way to Dunhuang on Gansu:
The Buddhist Art of Dunhuang - Information about, and images of, the caves. From About.com.
DungHuang Grottoes- China the Beautiful - Frescoes from the caves.
Dunhuang - Caves of the Singing Sands, Buddhist Art from the Silk Road - Provides a large amount of information on the artwork in the caves, as well as images.
Dunhuang Caves In China - A great introduction to the caves of Dunhuang: what they are, who created them, and what they mean.
Dunhuang, Photographs of the Dunes - Photographs of the dunes at Dunhuang by M. Kageyama.
International Dunhuang Project - An enormous database of manuscripts and other documents from Dunhuang and other parts of Central Asia.
Silkroad Foundation | Dunhuang Studies - Provides images, a historical timeline, bibliography and news of events. Help build the largest human-edited directory on the web.