Denon observed everything with the eye of an artist. Speaking of the Necropolis, which consists of numerous double galleries of grottos, excavated in the solid rock for nearly a mile and a half square, he observes, "I was convinced by the magnificence both of the paintings and sculptures, that I was among the tombs of great men and heros. The sculpture in all is incomparably more labored and higher finished than any I had seen in the temples; and I stood in astonishment at the high perfection of the art, and its singular destiny to be devoted to places of such silence and obscurity. In working these galleries, beds of a very fine calcareous clay have occasionally been crossed, and here the lines of the hieroglyphics have been cut with a firmness of touch and a precision, of which marble offers but few examples. The figures have elegance and correctness of contour, of which I never thought Egyptian sculpture susceptible. Here, too, I could judge of the style of this people in subjects which had neither hieroglyphic, nor historical, nor scientific; for there were representations of small scenes taken from nature, in which the stiff profile outlines, so common with Egyptian artists, were exchanged for supple and natural attitudes; groups of persons were given in perspective, and cut in deeper relief than I should have supposed anything but metal could have been worked." The Sepulchres of the Kings of Thebes are mentioned by Diodorus Siculus as wonderful works, and such as could never be exceeded by anything afterwards executed in this kind. He says that forty-seven of them were mentioned in their history; that only seventeen of them remained to the time of Ptolemy Lagus; adding that most of them were destroyed in his time. Strabo says, that above the Memnonium, the precise locality of Denon's description, were the sepulchres of the kings of Thebes, in grottos cut out of the rock, being about forty in number, wonderfully executed and worthy to be seen. In these, he says, were obelisks with inscriptions on them, setting forth the riches, power, and empire of these kings, as far as Scythia, Bactria, India, and Ionia, their great revenues, and their immense armies, consisting of one million of men.