The Aiggin Stone on Blackstone Edge near Rochdale. This is thought to be a medieval waymarker, sited on an old packhorse route, overlaying a Roman road crossing the Pennines. A rude latin cross is incised on the stone, with the letters I.T. The stone once stood several feet tall but has been diminished by falling and being pushed over.
It is supposed that this is where Yorkshire men said their prayers before entering Lancashire