Stela

At the end of the dark woods section, you'll come across a ravine. (At the bottom of this cliff is a secret.)

There is a shade on the other side of the ravine smacking his head against a tree. Instead of asking him what's wrong and would he like to talk about it, investigate the area just behind the fallen tree trunk and you'll find a large object.

Pick it up and walk to the cliff edge and chuck it in the stream below. The shade will run off to investigate and you can jump overhead and onto the next level.