We landed at Hoy, on a rocky stretch of shore composed of the gray flagstones of the district. They spread out here in front of the tall hills composed of the overlying sandstone, in a green, undulating platform, resembling a somewhat uneven esplanade spread out in front of a steep rampart. With the upper deposit a new style of scenery commences, unique in these islands. The hills, bold and abrupt, rise from fourteen to sixteen hundred feet over the sea-level; and the valleys by which they are traversed—no mere shallow inflections of the general surface, like most of the other valleys of Orkney—are of profound depth, precipitous, imposing, and solitary. The sudden change from the soft, low, and comparatively tame to the bold, stern, and high serves admirably to show how much the character of a landscape may depend upon the formation which composes it. A walk of somewhat less than two miles brought me into the depths of a brown, shaggy valley, so profoundly solitary that it does not contain a single human habitation, nor, with one interesting exception, a single trace of the hand of man. As the traveller approaches by a path somewhat elevated, in order to avoid the peaty bogs of the bottom, along the slopes of the northern side of the dell, he sees, amid the heath below, what at first seems to be a rhomboidal piece of pavement of pale Old Red Sandstone, bearing atop a few stunted tufts of vegetation. There are no neighbouring objects of a known character by which to estimate its size. The precipitous hill-front behind is more than a thousand feet in height; the greatly taller Ward Hill of Hoy, which frowns over it on the opposite side, is at least five hundred feet higher; and dwarfed by these giants it seems a mere pavier’s flag, mayhap some five or six feet square by some eighteen inches to two feet in depth. It is only on approaching it within a few yards that we find it to be an enormous stone, nearly thirty feet in length by almost fifteen feet in breadth, and in some places, though it thins wedgelike towards one of the edges, more than six feet in thickness—forming altogether such a mass as the quarrier would detach from the solid rock to form the architrave of some vast gateway or the pediment of some colossal statue. A cave-like excavation, nearly three feet square, and rather more than seven feet in depth, opens on its gray and lichened side. The excavation is widened within, along the opposite walls, into two uncomfortably short beds, very much resembling those of the cabin of a small coasting vessel. One of the two beds is furnished with a protecting ledge and a pillow of stone hewn out of the solid mass; while the other, which is some five or six inches shorter than its neighbour, and presents altogether more the appearance of a place of penance than of repose, lacks both cushion and ledge. An aperture, which seems to have been originally of a circular form, and about two and a