Möhne Dam Fragment

On the night of the 16/17 May 1943 the RAF's No. 617 Squadron carried out a low-level attack on dams in the Ruhr Valley using 'bouncing' bombs. Codenamed 'Operation Chastise' by the RAF, this audacious raid has become popularly known as the Dam Busters raid. The mission made the squadron's Commanding Officer, Wing Commander Guy Gibson, a household name.

This fragment of masonry is believed to come from the Möhne Dam, which was attacked by eight No. 617 Squadron aircraft and finally breached, after being hit by four of the special bombs, designed by the scientist and engineer Barnes Wallis.