Page:Archaeological Journal, Volume 6.djvu/504

 340 ROMAN ROADS, CAMPS, AND EARTHWORKS, sidered the equivalent of that at Aske Hall, its underlying bed of lime being worked on the south of Gilling, and making its appearance in the road north of Gilling, and through the plantations of Sedbury Hall. If this be correct, the Gayles sandstone lies below the Gaterley Moor sandstone. It is probable that this anticlinal line takes its rise in the Penine Chain, between Kirkby Stephen and Brough, and perhaps may be a continuation of the line on the other side through the lake district. For between Bowies and Greta Bridge the limestone quarries dip gently to the northward, and pre- serving their easterly dip, reach the confluence of the Greta with the Tees. The same limestone beds appear to be thrown up again by a cross fault at Loan Head, where they dip more rapidly to the north, and the fault seems to run south by Dalton at right ano'les to the anticlinal line. From Loan Head the limestone can be traced on the north of West and East Layton to High Langdale, dipping to the north, between which place and Melsonby it is probably thrown up again ; this fault seems to range by Hartforth and the valley of the Whashton Springs. From Melsonby the limestone continues by Lower Merry- bent Farm, where there is an upthrow and a reverse dip ; thence it mantles round by Middleton Tyas, and, sinking beneath the New Red, or Trias, beds, appears again on the other side the anticlinal, on the south of Skeeby. The undisturbed beds of the New Red may be seen near Thornbrough, and as they are nearly level in position, it is presumed that the disturbance of the older rocks took place before the deposition of the New" Red sandstone. After this account of the Roman works and ancient entrenchments, which form the principal subject of this memoir, we will proceed to notice certain other camps in the neighbourhood, which, though not at all situate within the triangular district we have undertaken to describe, may be considered as more or less connected with the whole scheme of militaiy defence for this part of Yorkshire. The first of these is HoAvbury camp, of which the remains situate about midway l)etween Wycliffo and Ovington, on the cliff imme- diately above the Tees, do not appear to have been noticed by any local historian. See the accompanying Plan.