Editing The Machine (section)

===Dark Horror===
You are miles beneath the surface of the earth on a week long expedition in a land with almost no natural light sources or food, surrounded by a mysterious mess of cogs, gears, pistons, and furnaces, well known to completely rearrange themselves at a colossal scale with some reasonable frequency, the moving parts of which will effortlessly rend you to pieces if you step into their path, and patrolled by alien minded automatons.

I don't see how this was ever not a dark horror. Adding cultists, insane delvers, and arks of previous eras of the earths biosphere to the mix does, if anything, lighten the mood because it takes away from the isolation