funny@lemmus.org to Ask Lemmy@lemmy.world · 11 months agoWhy is such a tunnel needed?media.mas.toimagemessage-square130fedilinkarrow-up1766arrow-down149file-text
arrow-up1717arrow-down1imageWhy is such a tunnel needed?media.mas.tofunny@lemmus.org to Ask Lemmy@lemmy.world · 11 months agomessage-square130fedilinkfile-text
I found such a photo on the Internet and became interested in what function such a structure could perform.
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