The annexed plan of one of the islands conveys a good idea of the general arrangement of this class of structure. The outer line of stakes enclosed a circle sixty feet in diameter, and within the enclosure there were groups of stakes--in some parts two or three deep--driven into the ground, seemingly for purposes connected with some internal arrangement. A, the central oblong portion, consists of a platform of round logs cut in lengths of from four to six feet, possibly the floor of the hut; B, a collection of stones with marks of fire on them; C, a heap of stiff clay; D, the root of a large tree nearly buried in the peat, the surface of the wood bevelled off, so as to form a sort of table, under which was found a considerable quantity of bones, apparently those of deer and swine. [Illustration: Fig. 235.--Section of second Crannog in Drumaleague Lake.] Fig. 235 is a section of the second crannog, which was surrounded by a tolerably regular circular enclosure formed of a single row of oak stakes F, F; it was seventy-two feet in diameter. The upper stratum B, consisted of horizontal logs of alder, reposing upon a black peaty surface; the logs were from three to eight inches in diameter, completely water soaked and rotten: this stratum of timber was three feet six inches deep. A, a heap of stones with marks of fire on them. Other hearths were found in different parts of the island. C, the lower stratum of decayed and blackened sticks and branches of all descriptions lying in every direction: this layer extended as far as it was pierced in the examination, viz., about four feet, but was evidently of greater depth. D, D, two heaps of stones found in the lower stratum. E, the kitchen midden, in which was a large quantity of bones of deer, swine, oxen, &c., that lay four feet below the surface. There was here found also the thin topstone of a quern, formed of micaceous quartzite, smooth upon the grinding surface, but otherwise rude and unfinished: the hole for the handle passes quite through; the grain-hole, two and a-half inches in diameter, is not directly in the centre.[260]