An urban explorer has left people feeling disturbed after sharing photos inside an abandoned bunker showing "dark" messages left on the walls.
The strange hideout was thought to have been discovered by Dan Sharkey, who stumbled across it at the back of a plot of land in Lincolnshire, Daily Star reports.
Images of the outside show a concrete block structure that you would never suspect to be hiding a underground room below, with no obvious entry point.
But the urban explorer found a long metal ladder leading down to the strange bunker that now resembles something from a scene in a horror film.
Inside, there's two rusted bed frames, one of which appears to still have a blanket laid on the metal springs, and a wooden cabinet that has been left to rot.
Previous visitors have left their own markings on the wall in series of bizarre drawings, including an angry stick man, a painting of a red and black tree landscape, and an image of a character who appears to be bleeding from the mouth.
But the message leaving people freaked out online is scrawled above one of the beds, with an arrow pointing to a dark hole in the bunker wall, reading: "Crawl inside. It will give you a hug."
The photos sparked the interest of other urban explorers while frightening Facebook users, with a few people commenting to say they wanted to visit the bunker themselves.
One said: "Looks like someone with a very dark mind was down there."
A second jokingly asked: "Aw that seems friendly, how was the hug?"
A third said: "I’m so deprived of human contact, I would of crawled inside, no hesitation."
Others were preoccupied trying to figure out what the bunker would have been previously built for, with some suggesting in the comments it was used by the Royal Observer Corps.
And someone else added: "Really is a shame every abandoned place gets trashed, some of these places in pristine condition could easily become attractions."
Do you think you know what the bunker is? Let us know in the comments.
