"I've heard stories about this. We're looking at a possible Asimov Cascade."
You may be wondering what is an Aimov Cascade, asking things like:
"Sorry, What's happening?"
"I need an explainer too."
"Yeah I'm pretty behind on this one."
Well, this explainer from Mortiplicity S5 E2 should help a bit:
"When squids started killing decoys, decoys started checking their decoys and learning they're making decoys. That's making them seek out and run into other decoys, making them realize they're decoys, making them start to kill other decoys."

In other words, there are a lot of decoys out there but only one true original. It seems like decoys are making other decoys. There is a letterbox stamp inside, please leave it back inside when you're done. There is not enough space for most trackables.
There is a bonus cache too if you think the final was just an elaborate decoy.... The bonus cache has not been published yet but the posted coordinates for the bonus are the ones you need to adjust with the numbers you find on this cache's log.