I'm trying intentionally to cause a cave in... I have a complete square dug out from ground to bedrock... It's 80 by 80 blocks... So the entire outside edge is dug out all the way around the square... When I dig out underneath, it collapses, but not all the way... What would be holding the giant floating piece of earth? There's nothing underneath and nothing on the side... If I wasn't trying to dig it out, it would all fall but of course now that I want it all out, it won't fall... Any ideas?