The bluestones of Stonehenge on Salisbury Plain continue to attract co
ntroversy. New dates on Stonehenge material using the Chlorine-36 meth
od have been reported as evidence that the bluestones rt ere moved fro
m their Welsh sources by human transport, not by glaciation. Here Olwe
n Williams-Thorpe and colleagues, who have argued for the glacial tran
sport theory, show that the Chlorine-36 dates have been misinterpreted
.