black rain ordnance

Black Hill is a hill in the Peak District, England.
It is the highest point (county top) of the historic county of Cheshire, lying at the tip of what was once known as the Cheshire Panhandle, a long projection of the county which lay to the north of the reservoir filled valley of Longdendale. Under the local government reforms which were enacted in 1974, Black Hill was placed for administrative purposes on the border between the boroughs of Kirklees in West Yorkshire and High Peak in Derbyshire. It reaches 582 metres (1,909 ft) above sea level and is surpassed in height in the Peak District by only two other major summits (Kinder Scout and Bleaklow). Black Hill (and those two other hills) is a typical Pennine moorland mountain, with a very flat and extensive plateau (but steeper sides).
The top is peaty, poorly drained, and thus very boggy after rain. The area surrounding the summit itself had virtually no vegetation and was very dark, giving the hill an appropriate name. However, recent restoration work has eliminated much of the exposed peat. Black Hill is crossed by the Pennine Way whose now-paved surface allows walkers to reach the top dry-shod even in the wettest of weather.

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