A commemorative plaque was unveiled on the 50th anniversary by Benny Rothman, principal leader of the trespass, at Bowden Bridge quarry near Hayfield - the start of the trespass.

The trespass proceeded via William Clough to the plateau of Kinder Scout, where there were scuffles with gamekeepers.

Several ramblers were later arrested and some received jail sentences of several months, on the changes of incitement and riotous assembly.

The mass trespass had a far-reaching impact, some of which is still playing out today.

Eventually, it led to legislation in 1949 to establish the National Parks, and to walkers' rights over open country and common land in 2000.