Astronomical calculator? Spaceship landing pad? Shrine to the Earth Mother? An exhibition at the British Museum uses the latest research to look past outlandish theories.Astronomical calculator? Spaceship landing pad? Shrine to the Earth Mother? An exhibition at the British Museum uses the latest research to look past outlandish theories.Read MoreStonehenge (England), Archaeology and Anthropology, Museums, British Museum, Durrington Walls (England), England