Shocking video shows 'Cave of Death' that people are forbidden from entering and kills anything inside

A horrifying 'Cave of Death' has claimed the life of any living thing which enters it, and social media users have been sharing their terror that such a place exists.

We've seen many a daredevil on TikTok and YouTube trying death-defying stunts, but this is one place on earth nobody should tread.

The terrifying cave can be found in Costa Rica in South America, and is located on the edge of the Poas Volcano. Just so you know where to never go.

Local news outlets say that the cave - named 'Cueva de la Muerte' - is very small, measuring only two meters deep and three meters long. It packs a powerful punch though.

A worker became gravely ill when the phenomenon was discovered, despite only getting 'close to the entrance' not actually venturing inside.

It has been reported that numerous animals have died when wandering into the cave by accident.

It turns out that the cave has basically no oxygen in it, and is instead filled with carbon dioxide - making it an absolute no go for humans and animals.

The National Library of Medicine states that carbon dioxide at higher concentrations 'leads to an increased respiratory rate, tachycardia, cardiac arrhythmias and impaired consciousness'.

"Concentrations >10 percent may cause convulsions, coma and death. Solid carbon dioxide may cause burns following direct contact."

Researchers found that the cave creates a horrifying hopping 30kg of carbon dioxide every hour.

What's weirder is nobody knows for sure why the cave exists or how it is capable of pumping out so much carbon dioxide.

Now, you'd think with such deadly risks that people would keep well away, but people will be people and there is a thriving tourist trade, with many flocking yearly to see the 'Cueva de la Muerte'.

You think your job is bad? One lucky (and very unlucky) tour guide's job is to light a torch and wave it in the entrance of the cave, where it immediately goes out due to the lack of oxygen.

One Twitter account has put forward the idea that the cave is of 'organic origin, resulting from underground mineral deposits subjected to high temperatures and pressures in the earth's magma, where oxygen is absent.'

Unsurprisingly, a sign outside the cave reads: "Danger, no trespassing beyond this point." No thank you.

The entry is only small enough for little animals and birds, which should hopefully prevent anyone stupid enough to think about trying to enter.