Stonehenge

Stonehenge is now well known to be an astronomical calculator, but it still has many mysteries.

How the four-ton bluestones were brought to Salisbury Plain from the Preseli hills of south Wales has been answered by engineers, but nobody has found out why.

Why go to the colossal expense of such transportation, when Stonehenge's sandstone monoliths were dragged from down the road at Marlborough? What was so special about the bluestones?

Simon Jenkins at the UK Guardian reports on a new theory that, as Warren Ellis says, “Stonehenge was a hospital.”