Further up in the interior of the Ilifian region a number of important glass objects have been found. Frobenius, commenting on the find of this character made as a result of his excavation in the neighborhood of the ancient "Holy City," testifies that "these furnish proof that at some remote era glass was made and moulded in this very land, and that the nation which here of old held rule was brilliant exponents of apt dexterity in the production of terra cotta images."[33] The spot where the objects were excavated is "located about a mile or more to the north of Ilife and undoubtedly marks the impression of an ancient cemetery." It is located today in what is a vast forest, and "is about half a mile broad, did hide and still in fact hides quite unique treasure." Frobenius in describing the excavations here, planned by himself and executed under the direction of Martins, the engineer of the expedition, gives the following account: "We went down some eighteen feet or so, near the ground water, and can report as follows, viz., the top layer consisted of about two and a half feet of extraordinary hard and compacted soil. Even in this we turned up several glazed potsherds.... At about six and a half feet we found pottery. But the actual adit averaged about eighteen feet below the surface. For we came upon charcoal and ash heaps at this depth. This thoroughly verified the native statements as to the finding of either pearl jars or ashes so far down.[34] The old excavations made by the inhabitants reached from twelve to twenty-four feet or thereabouts."