Why are there giant concrete tunnels in the desert?

Why are there giant concrete tunnels in the desert?Why are there giant concrete tunnels in the desert? External link

The Physics Girl team visited LIGO once again. This place is Dianna's obsession. If you liked this video check out these: I Visited the First Gravitational Wave Detector! LIGO | STELLAR https://www.youtube.com/watch?v=jtp71NT0GNg& Why aren't plants black? :herb: https://www.youtube.com/watch?v=3BRP

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