Thynghowe was an important Viking Era open-air assembly place or thing, located at Sherwood Forest, in Nottinghamshire, England. It was lost to history until its rediscovery in 2005 by the husband and wife team of Stuart Reddish and Lynda Mallett, local history enthusiasts. The assembly mound is at Hanger Hill,close to a parish boundary stone.As a result of continued research, Thynghowe is now included on the English Historic England Archive.