What do you think it could be?

There is always logic in actions, but it is not always obvious.

:smile43: I also sometimes have situations where I don't know where to go, no tasty targets have been scouted, and there's no scout nearby to pave the way for the overlord and sniff something out. Sometimes I just go wherever my eyes take me out of desperation. But I personally wouldn't head deep into the swamp without any idea of what's there.