Settlements within the South Pennines include Addingham, Ilkley and Otley in the north, and Bingley, Keighley, Haworth and Oxenhope, Halifax, Sowerby Bridge, Hebden Bridge and Todmorden in the Calder Valley. These also include Marsden, Slaithwaite and Meltham in the south-east, Darwen, Haslingden and Rawtenstall in Lancashire, and Greenfield, Horwich, Ramsbottom and Littleborough in Greater Manchester.