Mystery Fossils Sealed Earth's Deepest Hole Forever

American engineers were tasked with drilling to a depth of more than 700 feet (0.21 km) in the sea near a Mexican town. However, drilling was suspended due to a lack of funding for the project.

As we all remember, the Soviet Union had great scientific and technological strength at that time. The drilling came from a Russian base area. The goal of the project was to drill as deep into the earth as possible.

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