Huge Underground Ocean Discovered Deep Beneath Earth

hundreds of miles down in the mantle, inside special minerals that trap water like a sponge. Imagine, it could hold more water than all the surface oceans combined, reshaping what we thought we knew about Earth. What if the secret to earthquakes, volcanoes, and even plate tectonics has been hiding in this buried ocean all along?

Credit:
Down to the Earth's Core / Pioneer Productions
Journey to the Center of the Earth / New Line Cinema and co-producer
Tremors / Universal Pictures and co-producers