I love the phrase going down a rabbit hole, but it got me thinking, do rabbits even dig that deep to begin with? And what organisms (besides humans) might dig deeper that might be even more fun to tweak that phrase with?
Edit: Specified in title/body that I had meant to ask about non-human organisms. Still, there’s some cool info about deep human digs in the comments below for digfolks!
I only know of earthworm that they have been found up to 7 meters deep. But the rabbit hole thing is definitely not about the depth but about Alice in wonderland and the strange things you might find down there.
That sounds like some pretty dedicated earthworms! Also, as noted in another comment about the Alice reference, that’s a good point, albeit I guess one could say it’s about more of a figurative depth than literal given the curious places they go!