Random FactsCuriousOneNovember 22, 2016Artificial, borehole, deepest, earth, fact, facts, kola, on, point, staycurious, superdeepComment The Kola Superdeep Borehole is the deepest artificial point on earth Random FactsCuriousOneNovember 22, 2016Artificial, borehole, deepest, earth, fact, facts, kola, on, point, staycurious, superdeepComment
