#DomusDeJanas - #Sardegna : ("House of the Fairies" or of the "Witches") are a type of pre-historic chamber tombs found in Sardinia. They consist of several chambers quarried out by the Ozieri and Beaker cultures, resembling houses in their layout. Built between 3400 and 2700 BC, more than 1000 of the rock-cut tombs are known on the island. The shape of grottoes can vary from that of a rounded hut with conical or triangular ceiling. The walls are often decorated with magical reliefs.