LONDON (AP) — A mountain of illegally dumped trash near a river in the country outside Oxford was visible from space but few on Earth seemed to notice the mess. Hidden behind a thick row of trees from the busy highway next to it, the pile grew to the length of three Olympic-sized swimming pools and reached up to the roof of a two-story house as motorists unknowingly sped past. How the garbage got there and how long the massive pile had been growing remains a mystery, but its recent discovery