'Berry Mire' is technically the third level in Unravel, and sees you travel through a darkened marsh filled with berries and flies.
Much of this level involves physics-based puzzles revolving around water and utilizing Yarny's yarn to connect certain things and swing from them.
This is probably one of the more difficult stages in the game, particularly when it comes to filling the gap with water to raise the log. Fret not, though, our guide shows how to do it. There's also a pretty challening area in the mire when flies swarm you. Side note, if you ignore them and don't swat at them you'll receive a trophy.
Stuck on another part of Unravel? Check out our complete walkthrough and guide here.