funny@lemmus.org to Ask Lemmy@lemmy.world · 2 年前Why is such a tunnel needed?media.mas.toimagemessage-square127linkfedilinkarrow-up1759arrow-down145file-text
arrow-up1714arrow-down1imageWhy is such a tunnel needed?media.mas.tofunny@lemmus.org to Ask Lemmy@lemmy.world · 2 年前message-square127linkfedilinkfile-text
I found such a photo on the Internet and became interested in what function such a structure could perform.
minus-squareNeoNachtwaechter@lemmy.worldlinkfedilinkarrow-up19arrow-down2·2 年前They dug it out before. Later they rebuild it. But if they wait for a year, nature suffers much.
They dug it out before. Later they rebuild it. But if they wait for a year, nature suffers much.