At first the idea arose that this was an ancient burial-ground, and that the tombs had been hollowed out of the pumice-stone after the volcanic eruption; but it is now fully ascertained that they were built long before. The largest edifice, which has been cleared of the tufa which fills it, consists of six rooms of unequal size, the largest being about eighteen feet by fifteen; and one wall extends round a court of twenty-four feet in length, with a single entrance. The walls are built in quite a different manner from the fashion now used in the islands; they are formed of a series of irregular blocks of lava, uncut, laid together without any order; no mortar, but the interstices filled with a kind of red ashes. Between the stones, long twisted branches of the olive-tree are laid, still covered with bark, but in a very advanced state of decomposition. The wood has become nearly black, as if burnt, and falls to powder at the slightest touch. The inside of the rooms has never been whitewashed; but probably a rough coating of red earthy matter, similar to that which lies between the stones, has been put on. At the north side there are two windows; a third and a door are found on the other sides, and several openings into the different rooms. As these were formed by pieces of wood, which have decayed, the situation of the openings is chiefly ascertained by the mass of stones that have fallen in. In every case the roof lies in the interior of the rooms, and has been formed of wood laid upon the walls in such a manner as to be sloping; whilst in the largest apartment a cylindrical block of stone buried in the floor, has evidently supported a beam of wood, from which radiated the other pieces of the roof. The things which have been discovered in this building are numerous and varied. There are vases of pottery and lava, seeds, straw, the bones of animals, tools of flint and lava, and a human skeleton. It may be remarked that not one article of iron or bronze has been found, not even the trace of a nail in the pieces of wood which have formed the roof; the absence of metals is complete. The pottery is all well proportioned, the commonest kind consisting of yellow jars, very thick, and capable of holding many gallons. They are filled with barley, the seeds of coriander and aniseed, gray peas, and other articles which cannot be made out. The form, material, and size resemble the jars used in Greece for keeping cereals in very early though historic times. In many of the rooms, heaps of barley lie against the walls. There are smaller jars of finer ware and a brighter colour, ornamented with circular bands and vertical stripes. The colouring-matter, of a deep red, has been put on in a moist state without variety of design, being always in circles and straight lines.