The Hollin Hall Pumping Station is on the left of the picture, and the centre is Hollin Hall Frame now the offices of the National Trust in Hardcastle Crags.
LYRS 4204 - Lumb Waterfall, Grimsworth Dean, nr Hardcastle Crags,( note the incorrect spelling Grimsworth not Crimsworth) as featured on a B&W postcard published by the Lancashire & Yorkshire Railway promoting days out to Hebden Bridge by train.