"You're already a zombie..." 

I panic if my bed sheets are too tight

You have the natural camera energy of a well-established youtuber with a million subs. Respect your craft incredibly. 🙏🏼

This channel both excites and terrifies me.

This man is working hard to make content most definitely deserves a like and subscription.

I literally had trouble breathing while watching this.

you are amazing. i do not know how you do it. i couldn’t think of anything scarier.

i dont know how you do this- i’ve been in a cave once, it was very big and open, people there helping me, and i was only maybe 6 feet in. but i started freaking out, had a panic attack and couldn’t breathe- it was horrible. you have gained up utmost respect for doing this stuff 🤚

Bro I’m freaking out watching this

I appreciate how you basically have to cave twice to get this footage.

I watched this video quite a few times until now and I can feel about to panic every time you glance at the camera. Not only that but the uncertainty you had for this one, you made comments on a few occasions that made me fear for the worst. I was so relieved when Insaw you back in the opening

I stay stock in an elevator once and i was afraid and panicked. Stay stock in an elevator is so so much less afraid than what you do!

I started watching you like a week ago. Omg what u are doing is just not possible. I am literrally on my balcony breathing heavy and observing the sky. I have this sensation to cave as well but I'll just sit here watch you for the time being;) . The way how u explain the ride is calming and relaxing but looking at your surroundings make me think 'how is this even possible.?? ' how on earth can he be this calm and still smiling' . Shout out from Hong Kong.

Please take care yourself. We still want to see you alive 😭

Much respect. Lord knows I don’t have the mental capacity to step one foot into a cave like that.

I've watched these so much i dont even have claustrophobia anymore

As a beginner I got stuck under my bed it was tight, kept calm even with the carpet burns. I remembered to breathe back myself out

I’m scared for the day he makes one last post named “it’s over.. I’m stuck”

Found you through Buzzfeed. I’m extremely claustrophobic but I find these videos are like an emotional roller coaster for me 😆 I find myself grasping for big breaths watching you do this. I HOPE THIS CHANNEL BLOWS UP!

Appreciate the advice on how to turn around in a cave it really help me out the other day working underneath my car

The things you have all done is unbelievable, i have been following you like month ago and I getting shock more and more your every single new video. I wish you the best. Big hi from Turkey.

Calvin , you are the Superman of cavers , it felt like I was watching “The last descent” but you were down there all by yourself in uncharted passages. In very tight squeezes , one can see why you don’t go head first unlike the movie . Wow , that was so claustrophobic , for most of us , the fear would drive us crazy . Your courage is off the charts .

I have this reoccurring nightmare were I'm almost 75 degrees vertical head down, arms pinned by my sides in a pipe I barely fit; the pipe is 100% full of downward fast flowing water; the pipe gets tighter and tighter ( I'm being pushed along by the flow and weight of the water above me ) and then there's a sharp upward bend that my back just won't allow me to pass by. I'm stuck, I'm already convulsing from lack of oxygen and about to drown since I'm completely submerged. No way forward, impossible to move back up against the strong flow of the water. Sometimes the sleep paralysis hasn't gone by the time I'm semi conscious, it's terrifying. Your mind and resolve must be granite, I'm truly in awe of your ability to go where you do both physically and mentally, and still want more!

"you already zombies", just true... its sad but true

I cant stop watching out of sheer panic and fear. I respect your professionalism for your craft. But it's f$&"* terrifying.

Right on new passages.. love watching your channel.. Stay safe

Im really getting claustrophobic seeing this stuff

This guy is crazy and brave all at the same time. Be safe pls.

this channel continues to blow my mind with every upload. thanks for all you do, Calvin! you deserve way more subscribers

"I don't know what it looks like for you.." It looks like the things nightmares are made of. that's what 🤣

I found this channel a few days ago, I don’t know how I got here but i like it. I’ve started watching all sorts of caving and cave diving. I’m to fat to fit in most these but it’s very cool to watch. Keep it up caveman

Oh god, as far as I’m concerned, this is the scariest cave you’ve ever been in. It makes me want to scream, cry, vomit, and void my bladder and bowels. And after that, sweat myself to death. Bravo, friend. You set the bar ever higher.

Truly love your work and bravery

Learning alot from ya videos. Simply, know your limits and you'll find your capable of more then you think. Love these videos.

I will stick to disc golf and surfing, that's how I get that ALIVE feeling. Bombing hills and going fast! I could not do what you guys do but really appreciate your message. The trolls need to get outside and go for a hike!

Man. I love your videos. I have claustrofobia, and somehow, when i watch your videos, my claustrofobia comes and goes, and i have to deal with it in a secure environment. I'll not gonna say that i want to enter a cave, but this helps with my fear. Thanks a lot. Keep doing it.

I started to find caving very interesting in the last few Weeks, but Just to watch footage, dont do it myself actually. Great video!

3:06 watchin you do this really makes me apreciate my zombie lifestyle 😂

4:37-4:40 is a big heck nope for me. You two are brave souls and I love watching these videos bc it helps me deal with claustrophobia triggers lol

You’re incredibly brave. I’ve always wondered how you’d turn around. Thank you for this ! :)

Damn that turning around part was epic :)

I just hope he's always having multiple fail safes.... I hope he has plans in the "just in case" scenarios

i was so happy to see you guys featured on facebook. Thats awesome! i hope it grows your channels and you guys really get some exposure out there. Jacob and you are awesome and i love your videos, mainly because they fascinate me and if i was healthier and in shape I wouldve loved to live a life of adventure as such.

Found your channel after watching Brandon gross but this only video I have watched has me on the edge of my seat and that alone is worthy of any sub, brilliant content

This is unbelievable. I’m definitely a subscriber!!

Man ur insane I don't know how u keep what could happen out of ur head and be able to squeeze in tight places like that it's just crazy I can't watch no more ✌️

Awesome locations and such interesting caves/geology. Watched lots of mine exploring and I agree that mines seem more dangerous than caves. Natural processes vs. brute force mining seems to make unstable passages...stay safe

So much anxiety just watching

Such a fantastic cave!! Your voice is so soothing such inspiring

that zombie metaphor was legit

Thanks for another video I’m excited for the next one

the unique and dangerous content and hardworking i ever seen in youtube salute---

Kudos to you man this is unbelievably amazing

It's so nice to see u out , : )

Having the camera there to talk to must be a comfort in some way ide imagine? A nice distraction from the stress and something to talk your thoughts at Really amazing to see this kind of thing

Amazing as always!

As usual, you do not disappoint at all. Wow that was a tight one.

Iv watched loads of your videos. But this as to be the worst panic attack iv had watching . I had to go outside for a breather. Best wishes from the UK. Stay safe and well xx ❤️❤️🇬🇧🇬🇧

Great video .. really put me in your headspace....

Can’t wait to see you hit 1M such a small Channel with so much potential !!!

The anxiety of watching these, I feel like I can't breathe, but I also can't stop watching!

Love your videos

I have an incredible amount of admiration for what you show us every time. how to struggle through this narrow passage. thanks again for these unique images. is certainly appreciated. God bless you. greetings from Belgium. Europe

you deserve way over one million subs i really enjoy your channel

This might be the craziest thing ive ever seen in my life.

Subscribed, so scarey yet so fascinating

Before I don't mind about this and I was think that's something pretty stupid, but, watching your videos really changed my mind, I really appreciate your work, it's really really amazing

This is amazing your truly Brave -:)

I need to start stretching 😂 stay safe out there! All the best from Alberta

Absolutely unbelievable 👏 I can't stand my feet hanging over the edge of my bed so this was terrifying to watch but amazing at the same time.

Νομίζω ότι είσαι ο πιο τολμηρός ανθρωπος στον κόσμο!! Όταν βλέπω τα βίντεο σου πονάει το στομάχι μου από τον φόβο. Μου φαίνεται αδιανόητο ότι μπορεί ένας άνθρωπος να κάνει τέτοια πράγματα. Μάλλον δεν είσαι ένας απλως άνθρωπος...εισαι Superman !!!

My man! Where’s Jacob hiding? Poptarts and Netflix? 🤔 🤣🤘🏻❤️

Wow this is a cool channel!!! I'm glad I found this I may not go to sleep tonight

Why do I watch these? And I quote, "all of you zombies... I'm feeling really alive today." - Caveman

im gettin so much anxiety watching this smh..

Won't be long until your channel really takes off excellent content 👌

I feel like when your talking us threw uncomfortable situations your talking yourself threw the situation to calm yourself lol

ironically the moments you need to ignore the camera and focus are the best moments to capture. Love your work!

Patience is a virtue

This is terrifying

Omg x hats off to u x I couldn’t even go in a cave were u can stand up an walk x

Oh that’s a whole lot of nope right there.....

I don't fit through that other passage, so I'm gunna go through a tighter one. God love you man ❤️

Awesome videos very exciting

You're insane. Subscribed

Found your channel from tiktok. Love the videos dude

you’re so brave. I love watching your videos because I know I’ll never be in there but I want to know what’s in there haha

I was watching "scary" ghost video's, the algorithm knew how to really scary me...nice video

This one had me squirming Cal. Awesome stuff

I can't with this title and thumbnail 😭🤣

Random RU-vid algo recommendation, not disappointed 😂

I really would of liked to see that moment when you realized you couldn’t make it past that dip. When you rolled onto your back, I would of liked to see what it looks like for a professional when he knows it can’t be done or to keep trying

I rather be a boxer with the risk of head trauma than do this.. with that being said i respect you and your dedication to this you called art.."forever a follower from a far distance " stay blessed brother

I'm not even claustrophobic and I'm freaking out...

Unbelievable,awesome

I went to Mammoth Cave in KY for a day trip at the age of the boys you got. The experience breaks into so many interest. Go while you're smaller for best experience.

A new definiton of insanity.

Great view

This video makes it hard for me to breath... I don't like the idea of myself being in this situation for any reason.

Cool stuff, super dangerous hobby my friend.

Yo u best youtuber if I got stuck their I would die of fear and panic