Breaking The Record
Despite the fact that Lone Star failed to find what it was looking for, it remained the world’s deepest hole for another five years. On June 6, 1979, one of the Kola boreholes known as SG-3 broke the record. By 1983, the nine-inch-wide hole had penetrated 39,000 feet into the planet’s surface.
Breaking The Record
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After That Milestone
The Kola Peninsula researchers have temporarily put down their tools now that they have reached that milestone. They took a year off from working on it to allow various people to visit the incredible site.
After That Milestone
