tomb of the giants somu de sorcu in the giara di siddi

siddi giara sorcu italian mediterranean site grave history italy tomb archeology block bronze granite island primitive rock ruins blue green nature sardinia li lolghi building nuraghe nuragh stone tourism travel arzachena costa smeralda emerald coast gallura giant 039 giants giganti megalith megalithic nuragic sardegna sena thomes tomba tombe dei menhir nuraghi tombs