Last friday at work i found an underground bunker or shelter the hard way,by falling through a hole in the roof,luckily only went about 3-4 feet and just a few bruises.today part of the section had a better look they widened the hole i originally fell in ,and shone a torch into it,inside was what looked like radio/electrical equipment and other debris,having decided it needed further investigation they excavated at one end and eventually found a doorway.Unfortunately or maybe fortunately all that was inside was some old radio or other electronic equipment,