Not only are you jumping out of a plane over a very large mountain but you're also not watching where exactly you're going, this .
This daring wingsuit pilot decided to take the advice of ‘Don’t look down’ quite literally – undertaking a series of flights completely UPSIDE DOWN. In the stomach-churning footage, Brendan Weinstein can be see soaring through the air on his back, high above the Mettelhorn Mountain, Switzerland,