What If You Explored the Deepest Points on Earth?

If you traveled to the deepest points of Earth, what would you find? Lost cities, mythical sea monsters, rivers of gold? Probably not. But there is still a lot to discover. So join me as we travel deep underneath the surface to explore some of the most inhospitable places on Earth. What lives at the bottom of the Mariana trench? How much of the ocean is unmapped?
What is mined deep below the Earth’s surface?