Locmariaquer megaliths

They comprise the elaborate Er-Grah tumulus passage grave, a dolmen known as the Table des Marchand[1] and "The Broken Menhir of Er Grah", the largest known single block of stone to have been transported and erected by Neolithic people.

The impressive dimensions of this menhir still divide specialists about the techniques used for transport and erection, but the fact that this was achieved during the Neolithic era remains remarkable.

The stone at the back of the chamber contained an engraved stele with whorls and arched decorations which may represent fields of crops.

The dolmen was fully exposed and above ground until it was excavated and rebuilt inside a cairn in 1993, reconstructing its original appearance and protecting its contents.

According to A. W. R. Whittle, "In front of the south facade of the primary phase of the long cairn of Er Grah, close to where the menhir Brise originally stood...a pair of domesticated cattle were found in a pit.