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/sci/ - Science & Math

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>> No.15192853 [View]
File: 361 KB, 1920x1280, Tunnel_Tour_(32198662966).jpg [View same] [iqdb] [saucenao] [google]
15192853

>>15192849
this is 17.5m btw

>> No.14592871 [View]
File: 361 KB, 1920x1280, 1594163756318.jpg [View same] [iqdb] [saucenao] [google]
14592871

this is 17.5m tunnel fyi

>> No.11878986 [View]
File: 361 KB, 1920x1280, Bertha_tunnel.jpg [View same] [iqdb] [saucenao] [google]
11878986

>>11878968
>30 meter diameter
For comparison, this is a 17.5 meter diameter tunnel.

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