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Chapter 337 Dig through the crust
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Chapter 339 Excavation channel
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... kilometers, it is eleven kilometers. If I dig through this tunnel, it is equivalent to digging through seven Marias. Na Haigou, with such a simple calculation, suddenly felt even more unmotivated.
In addition to the Mariana Trench, which is located in the ocean, the deepest cave that humans can excavate is only 12,000 meters. More importantly, this cave was excavated during the former Soviet Union, and subsequent humans never had it. Can reach a deeper distance than this.
In other ...
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