Chapter 11 WHO WERE THE BUILDERS,

AND WHENCE DID THEY COME?

Modern discussion of the origin of the megalithic monuments may be said to date from Bertrand's publication of the French examples in 1864. In this work Bertrand upheld the thesis that "the dolmens and allées couvertes are sepulchres; and their origin seems up to the present to be northern." In 1865 appeared Bonstetten'