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Underground base

An underground base is a subterranean facility used for military or scientific purposes.

Examples are:

There may be more than 10,000 underground military facilities worldwide.

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Sources and credits

This article is adapted from the Wikipedia article Underground base, written by its contributors and licensed under CC BY-SA 4.0. Fathomly has changed the layout, removed citation markers, navigation and maintenance notices, and adjusted punctuation. This adapted version is shared under the same license. For references, see the original article.

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