Bacup is a town within the Rossendale borough of Lancashire, England. It is located amongst the South Pennines, along Lancashire’s eastern boundary with West Yorkshire. The town sits within a rural setting in the Forest of Rossendale, amongst the steep-sided upper-Irwell Valley, through which the River Irwell passes. Bacup emerged as a settlement following the Anglo-Saxon settlement of Britain in the Early Middle Ages. For centuries, Bacup was a small and obscure centre of domestic flannel and woollen cloth production, and many of the original weavers’ cottages survive today as listed buildings. Following the Industrial Revolution Bacup became a mill town, its landscape dominated by distinctive and large rectangular woollen and cotton mills.