Penumbra is real - possible inspirations?

[B0X1NG DRAG0N]

has spoiler at end of bp. I wouldn't be able to stay in any of those places I have like an over active imagination so if I went in there I would be trying to ram the door back open after about 2 minutes, if I had a couple friends that were also like me I would ask them to go to Greenland with me to those coordinates N81.6914, W58.3154. I guess I would have to persuade them.