No submarine today can cruise at bathyscaphe depths ... When Trieste has penetrated the Marianas Trench and studied its rugged bottom, her reports may explain the origin not only of the earth ...

Following is a transcript of the video. Narrator: The Mariana Trench is the deepest point on Earth. So deep that if you dropped Mount Everest inside, its peak would still be more than a kilometer ...

Hollywood director James Cameron has plunged nearly 11km down to the deepest place in the ocean, the Mariana Trench in the western ... first historic dive in a bathyscaphe called the Trieste.