Of the long-forgotten cities, discovered in the present century by their walls, little else remains than extensive cemeteries, which, as repeatedly happens among the ruined places of the earth, have outlasted by more than two thousand years the dwellings of the living. The streets and buildings of these settlements, already in ruins under the Romans, have disappeared almost without a trace; while the monuments of the dead are so well preserved as frequently to give information concerning even the domestic architecture of their builders. By far the greater number of the tombs were tumuli, conical hills of earth, which generally, as in Lydia, were elevated upon a low cylinder and reveted by an outer course of stone. These have now almost all been reduced to the appearance of natural mounds. Their dimensions in some instances are almost as great as those of the smaller Egyptian pyramids. The base of the monument at Poggio Gajella, near Chiusi, formerly falsely held to be the tomb of Porsena, measures 256 m. in its circumference, while that at Monteroni, between Rome and Civita Vecchia, is 195 m. These gigantic foundations at times bore several cones. This appears to have been the case with the so-called tomb of Cucumella at Vulci, where two tall tower-like elevations still remain, which doubtless served as substructures for the terminating piers. The cippus may be imagined to have been analogous to the upper members of the tombs in Lydia, or, perhaps, to have resembled a pear-shaped capital, like the fragment found near the ruins of the so-called tomb of Pythagoras, or the imitations upon terra-cotta reliefs--similar to the cone which so generally terminated Roman tholos roofs. When several cones were placed upon one base, the angle of elevation was made steeper, as may probably have been the case with the tomb of Porsena at Clusium, the description of which is given by Pliny (xxxvi. 3) after Varro. If the tombs called those of the Horatii and Curiatii at Albano, which display many Etruscan reminiscences, be compared with this account, it is possible to present a restoration of the structure, correct in at least its principal aspects. Upon the corners of the triply stepped, diminishing substructure stood twelve cones, the thirteenth being in the centre of the upper terrace. (_Fig._ 249.)