 A prominent feature of Healey Dell is the railway viaduct which stands 150 feet above the River Spodden, which rises in the Lancashire Pennine hills above Whitworth and proceeds south through Healey Dell and on to Rochdale, where it merges with the River Roch.Brown Wardle is a hill between Whitworth and the village of Wardle The summit is on the border of Greater Manchester and Lancashire and stands 1,312 ft (400m) above sea level.The hill is part of the South Pennines, lying within the historic county boundaries of Lancashire.