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A comment on Egypt builds worlds largest man-made river. Parent comment

Re:Egypt builds worlds largest man-made river by woodruffw on Tuesday April 25, 2023 @12:56AM (#35696653)
It's unclear that the river in the article is a river in the conventional sense, either: it seems to be routed underground for long stretches of tunnel at points.

(The longest tunnel in the world is also a water tunnel, and supplies NYC with water[1].)

[1]: https://en.wikipedia.org/wiki/Delaware_Aqueduct

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Re:Egypt builds worlds largest man-made river by Retric on Tuesday April 25, 2023 @09:59AM (#35700586)
Natural rivers will sometimes flow underground: https://en.wikipedia.org/wiki/Subterranean_river
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