Another tomb in the same district, that of Mane-er-Hroeck, was intact when discovered in 1863. It contained within its chamber a hoard of 101 axes of fibrolite and jadeite, 50 pebbles of a kind of turquoise known as _callais_, pieces of pottery, flints, and a peculiarly fine celt of jadeite together with a flat ring-shaped club-head of the same stone. The tomb was concealed by a huge oval mound more than 100 yards in length. The famous Mont S. Michel is an artificial mound containing a central megalithic chamber and several smaller cists, some of which held cremated bodies. [Illustration: FIG. 11. Chambered mound at Fontenay-le-Marmion, Normandy. (After Montelius, _Orient und Europa_.)] A very remarkable mound in Calvados (Fig. 11) was found to contain no less than twelve circular corbelled chambers, each with a separate entrance passage. The megalithic tombs of Brittany all belong to the late neolithic period, and contain tools and arrow-heads of flint, small ornaments of gold, _callais_, and pottery which includes among its forms the bell-shaped cup. In Central and South France the _allees couvertes_ are mostly of a semi-subterranean type, i.e. they are cut in the ground and merely roofed with slabs of stone. The most famous is that of the Grotte des Fees near Arles (Fig. 12), in which a passage (_a_) with a staircase at one end and two niches (_b b_) in its sides leads into a narrow rectangular chamber (_c_). The total length is nearly 80 feet. Another tomb of the same type, La Grotte du Castellet, contained over a hundred skeletons, together with thirty-three flint arrow or spear-heads, one of which was stuck fast in a human vertebra, a bell-shaped cup, axes of polished stone, beads and pendants of various materials, 114 pieces of _callais_, and a small plaque of gold. On the plateau of Ger near the town of Dax are large numbers of mounds, some of which contain cremated bodies in urns and others megalithic tombs. Bertrand saw in this a cemetery of two different peoples living side by side. But it has since been shown that the cremation mounds belong to a much later period than those which contain megalithic graves. In these last the skeletons were found seated around the walls of the chamber accompanied by objects of flint and other stone, beads of _callais_, and small gold ornaments. [Illustration: FIG. 12. Plan and section of La Grotte des Fees, Arles, France (_Materiaux pour l'histoire de l'homme_, 1873).] [Illustration: FIG. 13. The so-called dolmen-deity, from the tombs of the Petit Morin. (After de Baye.)]