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Some of the beds of ash and breccia beneath the two beds of 
slate metal are sufficiently cleaved in places to yield slate. The 
most important of these is the breccia worked at Queyfoot quarry, 
which lies about midway between the lower bed of slate metal and 
the base of the volcanic series. It has yielded a large quantity of 
slate of fairly good quality, although somewhat heavier than that 
obtained from the beds of slate metal above. It has also yielded, 
and is still yielding, an abundant supply of strong, durable, and 
very beautiful building stone. 
In the rocks on the north east of Ladder Brow, and just above 
the road between Lodore and High Lodore, there is a disused 
quarry from which some slate has been obtained ; this quarry is in 
the basement bed of the volcanic series. The great fault skirts 
the base of the rocky escarpment all the way from Lodore water- 
fall, to the head of Troutdale; and although it is not exposed 
immediately beneath the quarry, the latter cannot be more than 
about forty or fifty feet above it. 
In Langstrath valley, Borrowdale, about half a mile south of 
Eagle Crag, there is an old quarry of considerable extent. The 
bed of ash from which the slate has been obtained at this place is 
near the middle of the volcanic series, and it would seem that it is 
the only point, either in this or the adjoining beds, where cleavage 
has been sufficiently developed. 
In the upper part of the volcanic series there are seven or eight 
distinct beds which yield slate in large quantities; they are all 
much alike in quality, the slate being somewhat finer than that 
obtained from the older beds in Borrowdale. In thickness the 
beds vary from ten to one hundred and twenty feet, and the dip is 
towards the south-east, except in some places where it is changed 
by the curving and crumpling of the strata. A case of this kind 
occurs on the northern side of Little Langdale, where the dip is 
towards the north, and at Pennyrigg quarry, near Tilberthwaite, 
where the bedding planes are vertical. Slaty cleavage has been 
well developed at a great number of points in these beds, extending 
from Cawdale quarry, on the north-eastern side of Kirkstone Pass, 
to Walna Scar, about three miles south-west of Coniston, A large 
