详细介绍：Three things are certain about base jumping. You w…Three things are certain about base jumping. You will break your bones. You will watch your friends die. And – if you do it long enough – it will eventually kill you. In this heady, testosterone-packed environment, adrenaline junkie Karina Hollekim is regarded as one of the best of the best. We follow Karina for several years as she hurls herself off increasingly treacherous cl...详情