The ridge is discontinuous, with the hills forming two main blocks, north and south of the "Beeston Gap".
[1] The ridge attains its highest elevation at Raw Head in the Peckforton Hills, some 227 m above sea level.
Other significant summits and the parishes within which they lie, are from north to south:[2] The hills are composed of a range of sandstones of Permian and Triassic age.
North–south faulting is in part responsible for elevating harder-wearing strata above the general level of the Cheshire Plain.
The ridge is traversed by the popular Sandstone Trail, a middle-distance recreational route originally established by the former Cheshire County Council between Beacon Hill and Grindley Brook on the Shropshire border but now extended into Frodsham to the north and Whitchurch to the south.