That sulfer smell could be a sign of hydrogen sulfide. Hopefully y'all use detectors in the future when you encounter the smell. I hardly know you, but I'd like to see you fellers stay among the living.

You guys need to cary an air quality sensor. They're only a couple of hundred bucks and it might save your life. Maybe a subscriber can hook you up with one?

Gas detectors are a must in an environment like this - I recently did confined spaces training and it's scary how easily you can succumb to a lack of oxygen or noxious gases without even realising the danger.

Sounds like two of the Teenage Mutant Ninja Turtles gone exploring. 😂

Another way for an arrow head to end up deep in a cave, is the game was hit, but ran in there to die.

The mineral staining you see are white is Hydrozincite, black is manganese, red is iron, yellow is sulphides.

The WPA on that sign means Works Progress Administration, created by Franklin D. Roosevelt in 1935. The aim was to provide jobs and infrastructure during the Great Depression. The WPA undertook a wide range of projects, from building roads and public buildings to mining. The WPA likely sealed this mine to protect public safety from the dangers of toxic gases and an unstable structure.

I felt like I was spelunking with Bill and Ted in this video. PARTY ON DUDES!

I love how genuinely happy and excited they sound to explore.

I spent years underground and scaling walls and backs (Roof) was done everyday. Mines are constantly caving in as the rocks expand and the crushing weight does it's thing. The slabs above you can be pried down with the slightest bit of leverage. You can even do it by hand and it's impossible to tell if one will bring the rest down. Sometimes, you can't see if one is about to fall until you walk under it to the other side of it. It's the walking under it that freaks me out and I would even be afraid to raise my voice in there. Interesting video, thanks.

Yeah, about 2 minutes before they say they don’t think it’s a coal mine, I was thinking exactly that. Because there are no coal seams, no equipment left behind. It’s just a very dangerous cave where the roof could collapse in on you.

It’s absolutely crazy to go in with no gas detector and being that loud in a unknown cave with cracked slabs of rock on the roof they could come down very easy

Caves are really dangerous. That sulfur odor is likely H2S gas which can kill you. There is a reason they would take birds into the mine. If the bird died, then you knew to get out of there.

Federal Government says stay out, lets go in... Whats that foul smell? I found an arrow head, lets give it to authorities.

It really resembles a cave more than it does a mine

So nice that I can sit here in my recliner and vicariously explore the cave with you.

That white slime is a bioluminescent algae if you would have turned your lights off you probably would have seen blue light everywhere

"Dude, I think I HAVE to go in here". LOL! Like there is no other way... This channel is great!

The WPA was disbanded years ago, but their records are somewhere. If you care to research this place, call your Representative in the House and ask them to help you locate the records about this mine. Or ask a local librarian. They love to do research.

Wonderful! I love armchair exploring (from Scotland) with you! Fantastic adventure yet again! Thank you.

I finally went into this giant collapse nobody knows about in the Treadwell Mine in Juneau, it indeed goes down about 500ft to an underground lake that was I think an underground train passage and the ceilings are 100ft+ in some areas easily, there are passages into the mine off the sides of this collapse. The main mine has stopes that are more like 500-1000 feet deep underground haha and an 8 mile train tunnel you can get from one mountain valley to another

You guys exploring the places I will never have the balls to so I can watch it on youtube and still shit my pants.

It was always a cave. AND for a moment in time, it was a mine.

Most Excellent find Bill. Thanks Ted. ❤❤❤🔥🔥🔥🙏🙏🙏

Normal person reads sign: NO TRESPASSING Action Adventure Twins: Welcome!! Please explore ALL areas and enjoy yourself immensley!!!

It’s like watching live action goonies.

Adventure twins gonna find the alien caves soon…. I feel it…

just wait till you find the ancient lizard people caves

Theres a massive difference between taking artifacts for profit and finding something cool and appreciating it. I found a site with fossils, western and native artifacts. I reached out to a paleontologist and state parks and didnt even get a call back. I was told by native friends that i was specificly meant to find some of the things i have.

Ever heared of miners having a bird with them for the gasses as they would die way before people would be effected. That smell is a very bad thing

16:10 That could be a rusty auld rocker cover from an engine, you can see the (remains of) bolt holes on the sides & the big hole where the oil fill cap would go. Enjoyed the vid, keep enjoying yourselves!

“Activate the long sleeves!” 😆

Crawls deep inside the Earth on a daily basis and the one tiny spider blocking the path scares him shitless. You cant make this shit up

Bill and Ted's most excellent mine crawl.

I was so worried for you guys that the air might be toxic in that cave or that those spores were toxic. Keep all the cool videos coming!

Looks to me like a hybrid mine. They used a naturally formed cave to access the coal, much as they did for saltpeter back in the day.

I'm an artifact collector, and that is 100% an ancient knife.

You guys talk like your living in the 90s and I love it 😂❤ and the cave videos rock, dude 😎

Been watching for about a year now, just wanna thank you guys for always keeping it entertaining. By far one of my favorite channels to mindlessly watch! keep up the great work guys!

This is like the Dollar Store version of spelunking on a budget.

I can't believe you found that arrow head in there! I would have never seen it. Fun trip

"I gotta activate the long sleeves." i would have activated getting the hell out of there long ago 😂😂

another good video, always excited to see that you've uploaded! Would love to see a caving gear collection video!

Guys, I don't know where you live but y'all need to check out beacon cave in Bluefield West Virginia. There's entrances that haven't been sealed and it has not been explored and is said to be miles long

Let’s Go!🎉 Awesome to see you guys in a mine for once! Western Pennsylvania? I can take you places in NEPA you’d love.

Take a shot every time they say Dude

that water coming from the place you found the arrow head looks absolutely delicious and refreshing

Great exploring & thanks ActionAdventureTwins 🤗👍

Theory on the other opening.... They basically damned up the water... Once it filled to the point of bursting it eventually find a way around and the rush of water then and over the decades made that second opening big enough to walk right in?? ...

I'm glad you guys are out there checking these places out! Ain't no way! No way! No, how! I'm going in there! 👍🥰 all the best to ya!

Duuuude!😂 That high pitched "duuuude" at the 5:13 mark tipped me over the edge! I laughed so hard I had a coughing fit!!❤. Thanks dudes 😘

Good to see you guys back. Stay safe

Beavis and Butthead at work...

we find arrowheads all over the Colorado mountains. Like finding shells. Just keep it. Also, the water may have brought it in.

I live in the Pennsylvania Coal Region and for years the government has been blocking off abandoned coal mines. They do it for safety and mine runoff kills streams. When I was young we had sulfur creeks around where I live. These days they make settling ponds to remove the toxic mine runoff and some creeks are starting to recover. When I was in high school a few of us would go down into the mines and every single one we knew of got blocked off. Some you can't even tell a mine was there. We use to find all kinds of stuff in there, even dynamite.

That arrowhead isn't an arrowhead, more likely just a cutting tool, what we'd call a biface (2-faced flaked chert or flint blade). I always recommend leaving artifacts where they're found, you can come back and find it again years from now, with your children. Museums and archaeologists and tribes definitely do not need it, they'd tell you to go put it back. Great find though! Proves people were down in these caves, eons ago. Removing the artifact, you remove that context and the magic disappears, and it becomes just a broken rock.

My lord .. I watched this episodes with headphones on and the sounds and phantom noises are wild in some parts

If you guys are in western pa right now you should check out panthers cave by oil city pa, theres is a folks tale that the cave goes all the way across the Allegheny River and the native Americans would use it to cross when the waters were too high

Ugh I wish I could explore with u guys. Look so cool all the places and things u do.😊

Have you never heard that old saying curiosity killed the cat 🤣

it makes a lot of sense that a coal mine would be in a natural cave. coal forms from deposition of organic matter,, this happens a lot in wetlands. Peat can become coal. If there was a stream that had beaver dams, the dams would create little wetlands and if some of these wetlands became semi-permanent then a lot of organic matter might pile up in it. The streambed might be softer than the surrounding material, which is why the cave already forms a river (because it used to be one) , and in the same place is where wetlands would have had sediment rich in organic matter build up as it flowed down the stream and into a spot that did not flow quickly.

Dude! Your subscriptions are astronomical now! I startedwhen you had maybe 770 subscribers! Congrats! You are now an American success and can start selling Action Adventure shirts! I can tell you why you've succeeded: 1. This is the most important - you can hold a camera without jerking the camera around and snapping your head back anf forth and up and down so much the viewrer gets car sick and pukes. MOST cavers do that, older guys just can't handle watching them. This is the most important thing. 2. Your fun to listen to and love what your doing. It's infectious. And I don't like spiders either so I know right where you're coming from (never trust anything with 8 eyes). 3. You find great caves and push new passages where you can, it gives viewers a sense of adventure. 4. You get in tight spots that give us claustrophobia that are still mostly safe (if they scared me too much I'd have to stop watching, I don't want to support something that could end you) (please never slither down super tight passages that start sloping down hill, those things have become death traps many times over the years. Hanging upside down is fatal in the youngest strongest people in at most 3 days, usually 2, the lungs fill with fluid after screaming headaches begin, humans just aren't made for that). 5. You make enough so people can make a habit of watching once or twice a week or so, and they start looking forward to it. So there you go - so start buying some silver while you can, the American dollar will be inflated to worthlessness in the next 3-4 years, it can't be stopped at this point, so take advantage of silver & gold while you can and make hay while the sun shines, the precious metals will gain a lot in value and you will be left with something when our economic system caves in and depression hits in 3 or 4 years (when this happens who knows if youtube will stick around) - Yes I'm one of those edgy-kated types that had my own business for 30 years and learned a lot of economics and finances, now I'm old but you're young enough to take advantage of what I learned - the dollar has lost near 90% of its value since I was a kid, it will be a lot worse for your generation (I remember 10 cent coca colas in glass bottles and 4 for a penny hard candy). Best of luck.

You guys are making me wanna go explore.

My alarms bells are like NOPE NOPE - so I am glad you are filming it because only way Id see that

That's definitely an arrowhead the napping on both sides tells you it isn't a flake of chert.and the swirly fossils are gastropods pretty much just old snails and mollusk like you said.

It never ceases to amaze n horrify me how many spiders are in these places...

That’s amazing! Thanks for the thrill!

Good job, as usual bro-skis🖖

Yes brother, Real deal for sure. Cool find keep it! You was ment to find it. cool video brother Thanks for sharing.

Take a shot for every time he says “Dude” - and a double for “Holy Crap”…

That was fascinating, thank you!

At 7:42 those fossils are Basket stars and they still can be found in the deep oceans. Some coal was of low grade and not worth mining out. Like where I live coal was found but of a low BTU so they never mined it. Which is good, I don't have worry about mine subsidence taking out my home.

Is it possible a cave was already there that had a coal seam in it that they then mined out? A reverse of you guys finding a cave in a mine, found a mine in a cave, haha? Those spiral fossils are really cool!

Very cool and very cool find with the arrowhead

Thanks for the awesome video. As far as I know if you find ancient artifact, you get to keep it I don’t know if you took it or not but it’s definitely a keeper.

6:08 there are paw/claw marks under the other guys knee so there signs of life in the cave which usually means no harmful gasses that’s your way of telling if your okay to explore if you don’t have the proper equipment

I'm not a big fan of the government.

Lol at some people here... They only uploaded this video 6 minutes ago and it is 18 minutes long, there is no way you watched it all, lol.

Panthers cave in tionesta pa would be a great place to explore. Lots of caves and carvings in the rocks.

I love how they went through all that work to seal off the cave, but forgot the massive hole next to it.

Maybe more of a spear tip than a arrowhead but nonetheless a sick find.

Swirly things may be ammonites.

For the arrowhead I expect if you locate the nearest anthropology department and fire off an email to em basically showing what you found and where you found it, they'd be able to tell you a lot about it since they'd know what groups operated in the area and around what times etc. and also inform you on how to best handle that kind of thing in the future, plus whatever other questions you guys have - they're usually happy to share knowledge.

i love how excited they get when they think they found the fuzzy crystals then they realize they are unsure wth that even is yet they seems so amused by it they just happy to be there LOL

Keep the awesome videos coming!! Stay safe

This is no coal mine. It’d be black everywhere if it were.

Nice Work & Video 👍

This is actually the coal mine that Santa contracted to exact coal for kids who made the naughty list

There are hundreds and hundreds of miles of tunnels beneath Butte Montana.

The efficiency of the US Federal Government summarized in one video 1:31

Idk how people crawl around in these tiny places. I sure as hell would not want to be.

When I was a young "dude" I was exploring an ancient coal mine when a slab of rock weighing several tons came off the ceiling and crashed a few feet away. That ended my spelunking adventures! People told us to stay out of the mines, but we did not listen. We raise our American boys to be adventurous, self-determined, loyal, and fearless. The dudes will grow up to be engineers and military leaders. For now they miss the obvious. The responsibilty in freedom is not always to just block-off everything from access, but to also explain exactly why it is sometimes necessary.

fart juice lol

Yay! Be careful... You may be entering an alien base😊

I was really expecting Spicoli to jump out from behind a rock and say, "duuuudes".

Seems like a natural cave adjacent to an old coal mine. The wall helps reduce acid mine drainage by keeping air / oxygen out. The company I used to work for got several. contracts in WV sealing up old mine openings.

💯% a Guilford Round base blade. Middle to late archaic period. I have a few of these but not in that material, mine are made of milky quartz

That’s pretty solid that you left it behind.

Water in those mines can be very acidic and toxic.

BILL AND TEDS MOST EXCELLENT ADVENTURE DUDE!