You may be aware that the Hospital of St Mary of Bethlehem in London served from the 1377 as a lunatic asylum and is used today for people with mental illness. The word bedlam, used to describe a place of uproar and confusion, derives from the behaviour of the inmates of this institution and others like it in the early centuries.

I cannot find how or when the Bedlam Walls or the Bedlam Walls Point along the Derwent River were named.  Perhaps the quarrying and fertiliser production in a comparatively isolated location amounted to sheer madness? Does anyone know?