One remarkable thing about the rock-cut tombs is the form of their mouldings, which differ from any found elsewhere in Europe. Two of these are shown in the annexed woodcut (No. 169). They are very numerous and in great variety, but do not in any instance show the slightest trace of a cornice, nor of any tendency towards one. On the contrary, in place of this, we find nothing but a reverse moulding. It is probable that similar forms may be found in Asia Minor, while something resembling them actually occurs at Persepolis and elsewhere. It is remarkable that this feature did not penetrate to Rome, and that no trace of its influence is found there, as might have been expected.[162] TUMULI. The simplest, and therefore perhaps the earliest, monument which can be erected over the graves of the dead, by a people who reverence their departed relatives, is a mound of earth or a cairn of stones, and such seems to have been the form adopted by the Turanian or Tartar races of mankind from the earliest days to the present hour. It is scarcely necessary to remark how universal such monuments were among the ruder tribes of Northern Europe. The Etruscans improved upon this by surrounding the base with a _podium_, or supporting wall of masonry. This not only defined its limits and gave it dignity, but enabled entrances to be made in it, and otherwise converted it from a mere hillock into a monumental structure. It is usually supposed that this basement was an invariable part of all Etruscan tumuli, and when it is not found, it is assumed that it has been removed, or that it is buried in the rubbish of the mound. No doubt such a stone basement may easily have been removed by the peasantry, or buried, but it is by no means clear that this was invariably the case. It seems that the enclosure was frequently a circle of stones or monumental steles, in the centre of which the tumulus stood. The monuments have hitherto been so carelessly examined and restored, that it is difficult to arrive at anything like certainty with regard to the details of their structure. Nor can we draw any certain conclusion from a comparison with other tumuli of cognate races. The description by Herodotus of the tomb of Alyattes at Sardis (Woodcut No. 115), those described by Pausanias as existing in the Peloponnesus, and the appearances of those at Mycenæ and Orchomenos, might be interpreted either way; but those at Smyrna (Woodcut No. 113), and a great number at least of those in Etruria, have a structural circle of stone as a supporting base to the mound. [Illustration: 170. Plan of the Regulini Galeassi Tomb. Scale 100 ft. to 1 in.]