underground mine

A cavity or network of tunnels dug under the earth for extraction of minerals.

An underground mine is an intentionally hollowed cavity, tunnel, or network of tunnels under the surface of the earth where minerals or other substances are dug out from within.

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Sources increase data credibility. Show default source

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Enter source for whole object

Used as source for every field you change or enter.

Type of source

Date witnessed

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Sources increase data credibility. Show default source

Select a structure to edit.

Enter source for whole object

Used as source for every field you change or enter.

Type of source

Date witnessed

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