Which famous cross-Pennine pass runs between Manchester and Sheffield on the A57, crossing the river Alport on the way?
River Alport:  Its source is on Bleaklow, from which it flows south through the Grains in the Water swamp, then over gritstone to Alport Bridge on the A57 Snake Pass route from Sheffield to Manchester, where it joins the River Ashop, which flows into the Ladybower Reservoir about 2.5 mi down the valley. A57 road:  It runs east from Liverpool to Lincoln, via Warrington, Cadishead, Irlam, Patricroft, Eccles, Salford and Manchester, then through the Pennines over the Snake Pass (between the high moorlands of Bleaklow and Kinder Scout), around the Ladybower Reservoir, through Sheffield and past Worksop.
Snake Pass