The Moon goes around the Earth, the Earth goes around the Sun, the Sun goes around the centre of the Milky Way: a supermassive black hole. As you read this you are currently orbiting a black hole. Money might make the world go round, but black holes make the universe go round. Black holes are not just a curiosity; they are some of the most important objects for understanding how our universe works and how it came to be. And yet they are incredibly misunderstood; take everything you think you know about black holes and get rid of it. This book will be a book about black holes like no other; it will journey beyond the event horizon and consider what the 'inside' of a black hole is truly like, and flip it on its head. It will take black holes and turn them from something beyond comprehension for the average person on the street to a level of understanding you never thought possible, through unique analogies and ideas the human brain has a hope of actually picturing. This book will show you why you should be calling them white mountains - and not black holes.