OF THE DISTRICT. 
149 
Buckden pike — (grits over the middle grit) 2304 feet (N.) Main 
limestone on the west 1850 feet. Pen hill — (middle grit on the top) 
1764 feet, (1675 feet N.) Main limestone on the north 1200 feet. 
Edge of Wharfedale. — Yokenthwaite moor, grit over limestone 
2111 feet (N.) Deepdale moor 1991 feet (N.) 
The south-eastern side of Coverdale is guarded by a long ridge 
almost exactly corresponding to that on the north-west. Great Whern- 
side 2310 feet (N.) (2263 feet Ordnance Survey) answers to Buckden 
pike, and Rover crag, over Scrafton 1552 feet (N.) to Pen hill; the 
intermediate heights are Little Whernside 1985 feet (N.) Great Haugh 
1786 (N.) North Haugh 1677 feet. 
From this ridge several groups of gritstone hills pass off to the 
east and south-east. The group of Witton fell, north of Colsterdale, 
is an undulated moorland surface sinking fast to the east from Rover 
crag and Fell crag to Fearby and Masham, a descent of 1200 feet in 
eight miles. On the road from East Witton to Colsterdale, the central 
ridge is 1109 feet above the sea. The highest rock is middle grit, 
of Agra crags, as far as Healey where upper strata come on. Between 
Colsterdale and Nidderdale, a wide undulated surface of gritstones, 
plates, &c. stretches from Great Haugh and North Haugh, having 
on the edge of Nidderdale, the highest part of the region, beds above 
the middle grit. Here it rises above Gowden Pot, to about 1450 
feet, sends out a ridge north-eastward by the rocky border of Swinton 
dale to Masham and Hack fall ; and another by Writhen stone, 
Hambleton hill, and Dallow crags to Brimham rocks, where the upper 
grit is 1000 feet above the sea. 
Between Hack fall and Brimham the drainage of the Laver occupies 
a large nearly circular depressed surface. From Brimham eastward 
and south-eastward the undulated surface slopes irregularly toward the 
magnesian limestone. 
