Why is such a tunnel needed? - eviltoast

I found such a photo on the Internet and became interested in what function such a structure could perform.

  • Flying Squid@lemmy.world
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    1 year ago

    That under construction pit is the pit of the manlion. It’s similar to the pit of the antlion, except for construction workers.

    They always have to deal with the manlion before they start building. Often by pouring concrete over it.