The footage – posted by YouTube channel Explore With Us – shows what appears to be a tall row of shelves.
They are resting on a white wall – or so it seems.
The cameraman starts pulling on the shelves to reveal it is actually covering a secret doorway.
He then ventures into the darkened room, which looks like it hasnt been touched for years.
The first thing he comes across are several cartons of 9mm gun ammunition.
YOUTUBE/EXPLORE WITH US
TERRIFYING: A group of explorers found a secret doorway in an abandoned house
To the side of the bullets, he spots sound-proofing on the walls as well as dozens of explicit photographs.
Walking further into the scary room, the man comes across a cabinet containing sodium hydroxide – a compound that can cause severe chemical burns.
When he comes across some rope on the floor he concludes: “I know this probably sounds silly, but this really reminds me of a place a serial killer would hang out.
“Weve found a hidden room, guys.”
YOUTUBE/EXPLORE WITH US
MYSTERY: Gun ammunition was found in the room
More than 27,000 people have seen the clip since it was posted yesterday.
“That's a creepy place, I wouldn't want to visit alone,” one commented.
Another wrote: “This is creepy – something is suspicious.”
While a third added: “That place would give a thriller or horror writer a lot of inspiration.”
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