I'm not the type of person who's going to plunge head first into a dark, old mine in France.
Luckily these three guy have done it for us - and the footage is pretty insane.
The video opens in darkness before a headlight shows the yellow twists and turns of the cave walls.
Not only do they ride through it, they perform wheelies and jumps. All while barely being able to see in front of them, during their journey they come across some cave paintings and a sleeping bat.
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Watch the footage here...
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25-year-old Kilian Bron captured the high-speed journey at an old mining site in Luberon. The extreme cyclist was joined mates Olivier Cuvet and Maxime Peythieu.
Kilian said: "Three years ago, I was shooting a video in this forest and just by chance we found this mine so recently we went back and decided to go in on our bikes.
"It's a truly unique experience and after some riding in the snow and on volcanos, I can safely say this mine ride was crazy.
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But these guys were lucky to find a cave with just a few cute drawings.
Fearless Explorer Goes Down Cave
Credit: YouTube / Aquachigger
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Explorer Beau Ouimette recently took exploration to whole new heights when he decided it would be a good idea to go looking down a satanic cave.
"I've heard about a place up here where they have satanic rituals and this might be the very cave that it happens," Beau explained.
Moments later he spots blood splattered across the walls. What the hell is going on, you probably think. Not Beau.
Credit: YouTube / Aquachigger
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The adventurer doesn't let the haunting sights turn him into a coward.
As he walks further into the pit, he says: "I know there's going to be a skull in here - maybe just a human tooth."
He then spots an opening in the cave, which he speculates is the altar for sacrifices.
"Are these human tracks some sort of little creature?" he asks. "That's a creature that's much smaller than us but walks on two legs."
He concludes by saying: "Illumanti confirmed."
While Beau didn't really stumble across anything worth writing home about - another explorer Michael Scott most certainly did.
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A Rabbit Hole Turns Weird For Fearless Explorer
What Michael thought was a very well-crafted rabbit hole turned out to be something way more epic.
The mysterious cave network was estimated to be over 700 years old and belongs to the Knights Templar.
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The Templar was an order among the wealthiest and most powerful in medieval Europe - they helped to fight in the crusades and even created an early form of banking. Think of it as an early incarnation of the Freemasons.
The group is now associated with legends, mysteries and secrets. Think the Da Vinci Code and Assassin's Creed.
The ancient site shows beautifully carved arches, a font and a network of walkways.
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"I traipsed over a field to find it" the 33-year-old said. "But if you didn't know it was there you would just walk right past it."
Less than a metre underground it's clear to see how well preserved it is.
"Considering how long it's been there it's in amazing condition" added Scott. The caves may have been damp at the 'door' but further inside [they] were bone dry.
The claustrophobic and the lanky can think twice about getting in, though. The narrow entrance, small rooms and the under six-foot ceiling could present a challenge for the modern-day King Arthur.
Featured Image Credit: Caters