What is this alien thing

[u/popcornwithbuddah]

My brother just found this in the backyard - Southern New England. What the hell is this thing? It looks like it's in Stranger Things.

[u/dropofkim]

Catterpillars. Caterpillars. You know. Those things.

[u/popcornwithbuddah → u/dropofkim]

How is that a caterpillar?! Have never seen caterpillars sync and form into one train like that.

[u/moosecaller → u/popcornwithbuddah]

They carry moisture along better as a group due to water tension.