|This breezy tourist photo shows the expanse of Stonehenge in the West English Countryside. Photo: PillartoPost.org|
GUEST BLOG / By Katie Hunt, CNN Travel--Astronomical alignments were built into the design and orientation of Stonehenge -- the imposing monument that dominates a flat plain in southwest England. Archaeologists discover the likely source of Stonehenge's giant sarsen stones.
Prehistoric Britons built monuments like Stonehenge and Avebury with sarsen boulders, Roman settlers used sarsen bricks to build their villas, and medieval people built sarsen churches and farm buildings. But the largest sarsen boulders we know of in Britain today are the ones at Stonehenge.