Cave explorers, known also as Spelunkers (for one reason or another) risk their lives in pursuit of adventure, and as fun as it may look, 99.9% of us are too scared to do anything that they do.
These adrenaline junkies have done an activity that fits into this bracket, willingly choosing to send a camera down America's deepest unobstructed pit, in what seems like one of the most dangerous sports ever.
YouTube channel ActionAdventureTwins are known for their numerous cave explorations, some of which go wrong temporarily, but seeing as they upload videos more or less every week, nothing has gone terribly wrong so far.
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Their channel description reads: "We're identical twins who's action packed adventures will always leave you wondering what's next. As our channel gets bigger so will the adventures, so subscribe and get ready for the next trip!"
With over 693k subscribers, it's fair to say that the majority of their fans are living vicariously through the pair with an interest in watching cave exploring, rather than wanting to do it themselves.
Their videos see them exploring numerous caves with different features, some with bodies of water in them, others full of crystals, and some infested with bats.
But in this particular one, they go down the deepest pit in America, called the Fantastic Pit, which is part of Ellison's Cave in the state of Georgia.
The video featured guests Nate and Ben, who have their own exploring channel called Deep Freedom, and it starts with one of the twins explaining: "We're gonna repel down like, 128 feet, and we're gonna see the deepest cave in America, and we're gonna drop a GoPro down it."
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I mean, fair enough.
When dropping their grappling equipment down, the drop prompted one of the twins to call what they were doing, 'insanity' - yes it is.
As if the first drop wasn't enough, they reached the point where they could send the GoPro down another 586 feet, to the foot of the cave to observe its surroundings.
They attached the Go Pro to an electric drill with a long wire, meaning that the camera spun continuously while it made its descent.
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The muffled audio and chilling darkness made it look like it was a horror film, as the camera spun its way down to a point that was 714 feet below the Earth's surface.
At the bottom, a mini waterfall could be seen and heard from above, as the camera slowly rotates, revealing the bare walls and surroundings of the pit, with the backdrop of water dripping down.
Viewers were left feeling uneasy at the footage, and you can't really blame them after seeing it yourself.
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One user commented: "The muffled descending sound was terrifying! And the spinning.. I was just waiting for something to jump scare me."
Another said: "I'm not going to lie, when it got to the bottom i was anxious for a second. i saw one of those white rocks and was like... omg is that a ghost?!"
A third put: "This is the stuff in my nightmares but for some reason I'm addicted to watching it".
Featured Image Credit: YouTube / ActionAdventureTwinsTopics: Science, Technology, Travel, YouTube