Abandoning The Project
Because they knew the equipment would not last in those conditions, they decided to cancel the project. It had been 22 years since they had started digging at that point.
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The Kola Superdeep Borehole
Before sealing up what has become known as the Kola Superdeep Borehole, the researchers discovered a couple of fascinating facts. For one thing, they discovered small marine plant fossils at a depth of about four miles.