At one point, we entered an enormous three-chambered room full of men and women working on towering rocket engines.

CNN: STORY HIGHLIGHTS

Sites include Sithean Dubh, a chambered cairn where in 1831 it was said two skeletons of "gigantic size" were found.

BBC: Website reveals hidden landscape in Caithness

During the next four minutes, the interior of the Black Hawks rustled alive with the metallic cough of rounds being chambered.

NEWYORKER: Getting Bin Laden

The group of Neolithic monuments on Orkney include a large chambered tomb and two ceremonial stone circles together with a number of unexcavated burial, ceremonial and settlement sites.

UNESCO: World Heritage

But in the repeated curve of her thigh and calf he saw shapes like sea shells, with the luminescence and faint muscular rays of the great chambered nautilus.

ECONOMIST: Charis Wilson