The Story of our Trip to the Inland Waterways Association's (IWA) National Rally at Windmill End, Netherton/Dudley, 23rd/24th/25th Aug '96
Cobb's Engine House and Windmill End, the site of the Rally

The thing in the middle of the sky is a helium-filled balloon. It is attached to something on the ground.
Cobb's Engine House and Windmill End, the site of the Rally