Some people go into the forest because they are drawn toward darkness. In certain places, they will find what they have been looking for a long time. But will they be ready for this kind of experience? Light and darkness are not what they think it is. Darkness is more than the absence of light, it is a tangible entity. It is a substance. Darkness is black fire. For scientists, black fire is dark matter.
Black Fire Tales
I will tell you something about the black fires.
It is not good to go into that forest up the mountain.
Not when you can see these damned lights in the night.
Some folks followed the lights but many of them didn’t return.
Those who made it back from the forest weren’t right in their heads.
They were talking about a black fire.
A gate was opened to another dimension for them and something was looking from there straight into their soul, so they said.
Sometimes it showed them wonderful things. But some of them never talked about what they have seen. Those people are not the same people they were before, I swear to you.
This is fire mixed with fire.
(Duncan, The Forest Dark Screenplay)