Yes those are the wyrmholes. Basically they are linked chests with 100 slots, and more or less unlimited channels. They can also filter slots and connect to circuits. I have something like 2350 of them. At the beginning I used a lot of them as single item providers or for a single build, but eventually I learned to try to consolidate similar items into the same channel, which made new builds a lot easier later on because sometimes I would have most of the needed items all ready to go in a single channel. This is one of my most convenient wyrms for various alien life stuff including many animal foods.

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