Rock aficionados remember the epic scene in This Is Spinal Tap when the band are supposed to have a massive Stonehenge set piece lowered from the ceiling for a concert. Due to a mistake in the dimensions, the fake stone monolith that's lowered is in peril of being crushed by two dwarves hired to dance around it. But the truth is seven months before the film came out, British metal legends Black Sabbath, with then-new singer Ian Gillan in tow, planned to tour the Born Again album with an actual Stonehenge set. The quandary was the set was actually too big for even the larger venues that they played, which meant that the band was being dwarfed by fake monoliths.