Reconsidering every aspect of Stonehenge, archaeologist Aubrey Burl explains here how the outlying Heel Stone long predates the circle, and uncovers new evidence that the Welsh bluestones were brought to the site by glaciation rather than by humans. Burl reveals just how far Stonehenge was influenced by Breton styles and cults, and sets the record straight on the circle's astronomical alignments—for example, although the existence of a sightline to the midsummer sunrise is well known, the viewing position is not what most believe it to be.