As Barbedor said, it feels like a thriller piece to me. It could work for a forest setting just fine, but it doesn't inherently "say" dark forest to me. If I go with the head canon it sounds climactic, like you've been lost and suffering in the forest for so long and you're finally reaching the end of the ordeal, the light on the horizon piercing through the dense trees and mist... but it isn't necessarily the happy ending you hoped for. It has a kind of hopeful yet melancholic feel... you "won" but you lost things along the way.
Nice work, I enjoyed it ✌️