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Alukrad t1_j4uf16o wrote

So, are people diving down to the river floor and solder some stuff?

Or what?

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Imposter24 t1_j57oybb wrote

Do you think the tunnel just sits exposed on top of the river bed?.....

1

Alukrad t1_j58plp0 wrote

I'll be honest, i have no idea. Never invested the time to learn how it was made.

1