One of the piers in the interior of the vault. Entrance to the vault, looking south. Chief operator standing by door. View north from entrance to the vault. Note bridge over dry river bed.
Observatory is behind trees.
View south to entrance to the vault, taken from bridge over dry river bed. The observatory, surrounded by trees. Looking south from the southern gate to the border guard outpost. Ak Sai river in foreground, with massive exposures beyond. Panorama looking east from the southern gate to the border guard outpost.