The Mantle
When the dense shell eventually gives way to the mysterious inner layer known as the mantle, the process is reversed. It is estimated that this deeper layer accounts for about 40% of the Earth’s total mass. As far as scientists and researchers are concerned, this has resulted in a fascinating voyage.
Project Mohole
Project Mohole, which was launched in 1958 by the United States, was a pioneering effort. It lies in close proximity to the Mexican city of Guadalupe. A team of engineers worked on the project, which entailed digging into the Pacific Ocean bed.