The Ankheg is a rather low leveled beast. At CR 2 it is a decent monster to throw at a lower level party. The are basically giant insects with massive hooks at the end of their arms and gnarly looking mandibles. They like to burrow their way deep underground providing an interesting encounter setting for your party. They stay underground mostly as they get a majority of their sustenance from soil but do need to come up and consume flesh from time to time. Their eating habit makes farmlands and plains an Ideal hunting ground for the Ankheg. Now it is a lower level monster but I mean bugs are bugs and typically have colonies right? Imagine throwing a mid to higher level party up against an entire colony of Ankheg having to fight their way through a labyrinth of underground passage ways as they try to find and defeat the queen! There would be some homebrew necessary but it could be epic. Either way the possibilities are plenty! Thank you for listening! Be safe adventurers, but of course, not too safe.