books.google.es - Let Southbound take you to the Vredefort Dome and back in time to where it all started'The Big Bang! To how our world began, and then, when it was all perfectly formed around two billion years ago' Wham! Another big bang'this time an uninvited intruder from outer space in the form of a whopping 190-kilometre-diameter...http://books.google.es/books/about/Vredefort_Dome.html?hl=es&id=2S1zTqIrTNEC&utm_source=gb-gplus-shareVredefort Dome
