Schematic of a Karez Project | 
Cleaning an ancient karez. Photographed by: Roger D. Hansen | 
Excavating a new karez. Photographed by: Roger D. Hansen |
Gaochong, the ancient Uighur capital and Silk Route fort, in ruins.… | 
Karez provide the water needed to keep the Turpan oasis green.… | 
Near this location, the underground channel surfaces to provide… |
A windlass is used to bring tunnel spoil to the surface. Photographed… | 
Main routes of the old Silk Road. | 
The caves at Bezeklik contained important examples of Buddhist… |
