Description: Lumsdale is the name given to the valley which extends from near Highfields School on Chesterfield Road (A632 from Matlock to Chesterfield) to the A615 Matlock to Alfreton Road, 1 mile from Matlock and is approximately 1 mile long. The name probably comes from 'Lums', the Scottish name for chimney. The valley of the chimneys. The valley is a veritable treasure of Industrial Archaeology.