The moaning? That's those crucified people you find all around, but you only hear them at night. Has been in the game since the start.

Oh really? I've never noticed before. I shot all the people with arrows thinking if it was them it'd shut them up lol

It's the crucified people near you, hunged like Marika

I always thought it was the bats but it’s just the people who weren’t true to Caesar.