Video Voyage to the Bottom of the Earth James Cameron transported viewers to alternate worlds in Avatar and Aliens, but it's his real-life expedition to Earth's ocean floor that offers a blockbuster view of a truly alien world. National Geographic Channel (NGC) will premiere a new half-hour special, James Cameron: Voyage to the Bottom of the Earth , chronicling Cameron's historic one-man dive last month to the Mariana Trench's Challenger Deep, the ocean's deepest point. The Mariana Trench is perhaps the most isolated place on the planet. Cameron describes his journey to the Challenger Deep during his most in-depth interview to date: "I was watching the numbers going deeper. The sub slows down as you get to the target depth. There is a long moment of getting to think about it. Then you have to get busy. You have less than a thousand feet from the bottom, you fine-tune the ballast, adjust the camera, turn up the spotlight. As the altimeter counted, I saw the glow of the bottom!" Like Us On Facebook Science Partners About DEEPSEA CHALLENGE On March 26, 2012, National Geographic Explorer James Cameron made a record-breaking solo dive to the Earth's deepest point. DEEPSEA CHALLENGE is now in its second phase -- scientific analysis of the expedition's findings.