when I was much younger, we used to live with my grandparents in a big house on the seafront of a coastal town in the south-east. They had a large back garden, right at the far end of which was a building that we used to call "the terrace". The middle bit was basically three sided and open to the elements (obviously) and housed the washing line. On one side of this structure was a little room which we used to call the shed (but it was brick built), and on the other was another room, with a flight of steps leading down to an underground air-raid shelter. I didn't like going down there because it was dark and there was no light .... not to mention probably full of spideys and other creepie crawlies ..... I suppose it could have actually been the coal cellar, but because the house was on the Thames estuary, it was more likely to have been an ARS so the family could shelter there in case of a enemy raid over the sea. Anyway, just thought I'd put my ten penn'orth in to this chat ... Chox.