Although, in the present day, lovers of the picturesque resort to Glencar, yet, probably, few are aware that the locality was anciently the home of a considerable lacustrine population. In the early part of this century, when the level of the lake had been lowered by drainage operations, several crannogs became visible; and the one situated at the eastern extremity, where the stream enters the lake, had seemingly been the largest. Broken bones, antlers of deer, a quantity of old timber, and some articles of bronze (amongst them a tweezers) were said to have been obtained. In the _Annals of the Four Masters_, under date 1541, this site is noticed as the scene of strife between two branches of the O’Rourkes.--“The eastern crannog, on the lake of _Glen Dallain_,[262] was taken by the sons of Donal, son of Donogh O’Rourke, from Donogh, the son of Donogh O’Rourke. In some time after, the sons of Donogh O’Rourke, namely, Donal and Ferganainm, made an attack on the crannog, and privately set fire to the fortress; that act was perceived and detected, and they were pursued on the lake and were overtaken by the sons of Donal; Ferganainm, the son of Donogh, was slain, and drowned by them; and Donal having been taken prisoner, was hanged by the sons of Donal, the son of Donogh O’Rourke.” At the western end of the lake--on the subsidence of the water after drainage--four crannogs became visible; but, owing to the subsequent silting up of the cutting in the bed of the Drumcliff river, they have all again disappeared, with the exception of the largest, which, at the time of the drainage, was accessible from the land dryshod, though now the water reaches to a wader’s knees. To the east of this crannog there is still a considerable depth of water: the beach descends rapidly, and layers of large beams, from six to seven inches in diameter, can be seen radiating from a common centre; in some instances, three or even four layers can be traced. Cross-beams are noticeable, also piles driven in at intervals; these are only three or four inches in diameter, and sharply pointed at the ends; this side of the crannog presents the appearance of having been denuded of stones. The height of the water prevents exploration; but it has been roughly computed that, including the wooden substructure now submerged, the diameter had formerly averaged seventy feet, or possibly more. Careful search amongst the stones merely led to the discovery of fractured bones of _Bos longifrons_, _Cervus elaphus_, _Sus scrofa_, &c., and numerous teeth of mammalia, together with a fossil, possibly a selected specimen used as an ornament or charm, and pronounced to be a _Zaphrentis_--a coral of the carboniferous formation. “… in that rock are shapes of shells and forms Of creatures in old worlds, of nameless worms Whose generations lived and died ere man, A worm of other class, to crawl began.”