A team of elite cavers led by 68-year old Bill Stone attempts a months-long expedition to officially make Cheve Cave in Oaxaca, Mexico the world’s deepest cave. A massive logistical undertaki彩虹视频免费资源在线观看ng above ground supports the lead team in the depths as they navigate an un狄仁杰第三部derground maze of twisting tunnels and dead ends in search of a passage that leads to the bottom of deepest cave on earth.