I could really feel the sense of dread with this track. So many layers that gives it a very dense and eerie atmosphere. IMO, this is where ambient drone really thrives. The slow-moving elements immerse you into the darkness so subtly that you're forced to feel the true horror of the environment. You pulled it off really well.
I agree with some reviewers that maybe some extra mixing and EQing out a few harsh frequencies could help, but it wasn't distracting enough for me personally. Still a very enjoyable (and creepy) listen.