“cemitério de placas tectônicas”

2,900 Km Below The Earth’s Surface, Beneath Africa And The Pacific, Two Structures The Size Of A Continent And 100 Times Taller Than Everest Exist, And No One Quite Knows What They Are: They Could Be Residue From The Ocean Of The Original Magma Of The Earth Or Fragments Of The Planet That Collided With The Earth And Formed The Moon.