150 
PHYSICAL GEOGRAPHY 
Between Nidderdale, Wharfedale, and the ridge of Greenhow hill 
is a large dull tract of moorlands, composed of gritstones of the lower 
and middle groups, and the argillaceous layers above and below them. 
The strata in these wide moors rise north-west to connect with Great 
Whernside, and turn up on the south toward the anticlinal ridges 
of Greenhow hill. Meugher fell in the midst of this tract is 1S97 
feet (N.) The limestone of Greenhow hill is 1323 feet high. The inn 
1181 feet. Devil’s bridge 712 feet. 
Between the Craven fault and Upper Wharfedale is a large some- 
what oval space of lower limestone, much elevated ; and only partially 
covered with limestones and shales of the Yoredale series. This 
covering between Langsterdale and Littondale inclndes main lime- 
stone and some of the superior beds, rising in Birlcs to 1949 feet (N.), 
in Litton hill to 1989 feet (N.), and Haisegill hag to 1987 feet (N.) 
In the upper end of Langsterdale Cam rakes below main lime is 1664 
feet (N.), and Cash Knot near Penyghent, is 1933 feet (N.) Hardflask 
on limestone probably of the Yoredale series, the shales having become 
nearly extinct, 1745 feet (1ST.) Coska moor on beds above the main 
limestone 2050 feet (N.) Fountains fell on coal strata above the 
Ingleborough grit 2190 feet (N.), and Penyghent onthe same beds 
2284 (N.) 
Ingleborough, an outlier of the last tract based on the lower limestone 
surface and capped with lower millstone grit, is 2384 feet (N.), or 2361 
(O. S.) : the main limestone 2135 feet (in Simon fell); the Dent or 
Hardrow limestone at its highest point S. by W. of the summit 1467 
feet. The grauwacke three miles above Ingleton 750 feet. Thornton 
bridge, spring of the arch, 2001.7 feet below the summit. (All these 
measures from Mr. Nixon.) 
The Wharnside group, truncated on the west by the Penine fault, 
and on the south by the Craven fault, is double ; having Wharnside 
2414 feet (N.) or 2384 feet (O. S.), and Great Colm or County stone 
2253 feet (N.) above the sea. The main limestone is 1800 feet to 1900 
