Secret WW2 tunnels built on Hitlers order. What is inside is totally INSANE ! 

I was stationed at Herzogenaurch, Germany from 1970 to 1972 it was a secret Germán airbase during WW II. There were tunnels that would go from under the barracks and come out miles away on the other side of town, they were big enough to fit a 2 1/2 truck through with no problems. They had them gated and locked so couldn't explore because so vast people got lost inside them.

That was one massive tunnel system, carved out by hand. I think those cables looked like the core lead for a radio aerial, so yes, a massive comms centre. You would never think of something that big just fro seeing the front of the bunker. The first tunnel system off the street entance, you could just walk past and never know it was there. Thank you for the research and the time you dedicate to sharing history with us. Stay safe and well my friends

The tunnel systems here were unbelievable! The time and manpower to build them must have been horrific! Thanks for bringing them to us! Great trek through those tunnels!

This is an impressive find and I thank you for taking the time to share it with us. I'm especially impressed with the lack of graffiti and no real sign of vandalism.

What a remarkable find. Both systems must have taken months to build. Thank you and EE for the tour, it was another job well done. I can't wait to see more of this location. Take care and stay safe out there my friends.

A couple of very interesting finds. The first tunnel complex has obviously been fitted out as a local air raid shelter sometime long after the war, probably for Cold War use, but the second one, apart from some graffiti, looks virtually untouched, and maybe never used. The orange dots, and yellow markings, look to be some sort of recent survey marks, as if someone has measured, and recorded, the details of this bunker tunnel system. The incoming cables look like high voltage, so maybe this complex was meant to be a hidden command centre tucked away in the hills were nobody would notice. A lot of work went into it so it was obviously important to build it at that spot. We will probably never know why they built it, but, it's still a fascinating look back into distant times. Thank you guys for sharing these hidden tunnel systems. I always love seeing these almost forgotten slices of History. Cheers to you all!

I love that you don’t swear. It’s so refreshing.!

9:35 holy pancake......😅 that's a new one. Great footage btw

It appears to be a headquarters facility intended to be immune to allied bombing.

Wow!! What a labyrinth of a tunnel system the gift that keeps on giving! Love this when you think you have seen everything then you turn a corner and and there,s another surprise! Great respect to you HH as a single Father raising your children to discover and respect history. Like the way you and EE tested the acoustics in the tunnel ,a great duet!👍👍

Thank you sir !! Subscribed ! I did this as a kid in Gibraltars military tunnels before they became tourist attractions. I love it.

I always wonder, how you find that kind of secret places. Thanks for the really interesting tour through this one 👍🏻

Thanks for showing them.😊.

this was so cool, you and EE always have the best ww2 videos 🙂 I shared your channel around social media to show my support, thank you both!

That was an amazing location. Thank you for sharing it with us.

Wooow! That was absolutely nuts! It was the exact sort of military feature I love to see - a rather unassuming entrance which opens up to what seems like endless tunnels. Not only that, but with some extremely interesting artifacts still in place. I do wonder if such an extensive tunnel system up on the hill in the woods might have been a centralized communications facility. I'm guessing those thick cables coming down from above might be for an antenna array, as it has a distinctly coax look to it. I was also intrigued by the items scattered on the floor; I'd love to have been able to just sit there and sift through it all, as I'm sure there must be some very interesting clues in all that. Thanks guys!

What looked like a bunker actually hid this huge tunnel system! Such an incredible find. Thank you HH and EE for bringing history alive for us ❤

Thanks! I wish I could go back in time and see this place in all it's glory. If this was for communication equipment then there must have been antenna towers around. Nice discovery freinds and thanks for sharing.

Glad you made your way out, I got lost going around all those corners in the first bunker. Couldn't make out the connectors in the second bunker. They appear to be single core, could be for high power levels that cannot be managed with multicore cables. Did look like the connector end on the wall has some sort of insulator built into it which is indicative of high voltage cabling. It is similar to antenna connectors, but the cable just seems to be too big for that application. Very interesting, thanks for sharing.

Amazing tunnel and the work that had to be done , all of the tons and tons of concrete to make these bunkers ! Thanks for taking us along !

Wow ! Such an amazing places behind little entrances . I wonder what else could be hidden or forgotten. Thanks for showing these amazing places .

Well, that was a double surprise! What a find! Yes, those huge cables coming into the first room were coaxial cables that would run to an antenna - I guess they had one above the bunker or quite close to it - I've never seen them so big before, it must have been for something quite special. Thanks EE and HH!

Appreciate the upload man. I was fascinated with the tunneling aspect of the bunker.

Wow, you and Eagle Eyes have totally outdone yourself, Sir. I have completely enjoyed this!!!❤❤❤ please, don't tell anybody where this is at. What remarkable condition this is in!!! If you can try to close the doors back up and make it where nobody can get in - this is truly a piece of History!!! Thank you, guys!

Thanks! For further exciting explorations.

Couldn't believe how big they were on the inside especially the first one. Amazing how they converted it after WWII for use. Actually found it a shame that it had now been abandoned after all that work and money that had been put into it to renovate it.

Thank you for sharing your experiences

What a place , looks like something massive happened their , thank you so much for sharing

Amazing find, Thank you!

Wow....that's madness. And it's still there. Wow. Great work and eagle eyes.

Thank you for the walk through history...that's an awesome find

Two fantastic finds. The bunker complex is outstanding. Do you have any close-ups of the connectors? I believe I know what they are, but I would like a better look. Another great video job HH. EE's sing goes well in the tunnels. So much to look at in your area. Stay safe and well out there.

This was very cool ! Other than the cables , No telling what this was used for. Another great video explore guys.

What a discovery! Thanks for sharing and as always " Good Hunting "

Fantastic exploration. I wish you safe travels.

Holy Pancake! I may have to adopt this. Love it. Pretty cool. It would be interesting to explore these. The grounds are lovely too. 😁

Thank you for taking through the 2nd World War bunker ❤. Such a good explore 😀.. Thanks for having us along 👍,best wishes Simon and Beth ♥️ 🙋

Love the video, hope you and your family are doing great ❤

Great video!!!! Thank you.

Thanks for filming this for us WWII buffs

at 11:38 when EE starting singing a bit, i thought something was coming from inside the bunker haha freaked me out a bit

That first room in the mtn bunker with the square hole in the wall, was for a machine gunner to mow down any enemy coming in the entry you came in...the rusted steel square opening is a "gun turrett"

HI there WW2HH, I was wondering what do you think the most spooky bunker you have been in? Love your channel, I doing great work.

thanks again for this interesting video, it was nice to watch again

This was an amazing explore! That tunnel system was huge! I've never seen anything like that before. This was definitely a surprise. I thought it'd just be a regular bunker but wow! The Germans really had this place fortified. Too bad the other was closed off. I would have loved to see where it went. Thank you so very much HH and EE. Take care and stay safe. 💖💯

Well that was a surprise indeed!! Not sure which one I loved the most lol. I will say that second bunker was unusual. It could have been for communications being set on a mountain, but wow!! Just thinking the work that was done is unbelievable. The bricks was a plus as well. Very nice in finding this for us to see. Thanks for taking us. Can't wait to see what else, as you said there is more. Stay well,safe and until then, my friend...............................................

You two find the best spots!

That place is much older thans 40s more like 1600s 😮1700s

You have found there a VERY high level command and planning bunker HH & EE. I saw a generator room and fuel storage, the large room was probably the office, administration, secretaries radio operators. It all points to SOMETHING important nearby. Those cables are 'high tension' high voltage cables. Those sort of things usually went to a very tall radio antenna or a radar array above ground. 16:47 THAT is definitely a cable trench so this bunker had EXTENSIVE comms connections. Possibly even an AREA COMMAND CENTRE? If you could pinpoint on the ground above where this bunker is you might find array mountings or fixings for steel guy lines to support a radio mast. FANTASTIC! Thank you!👍👍👍👍👏👏👏👏

Awesome show thank you

The WW II Bunker on the hillside is Pretty cool. looks 100% Original wartime built.

There's alot of hours and man power put in too these structures wow the size and depths of the bunkers its amazing the length they went unbelievable

What a gigantic tunnel system and what a gigantic bunker/tunnel system!!! How many man hours it must have took to build that, I can't imagine. Awesome explore, HH and EE!❤

You’re going to find an abandoned laboratory in one of those caves, with some sort of war monster or man machine sealed inside still alive. Don’t open the door or go down any pits. If theres a length of chain leading around a corner, don’t follow it.

I would have to agree the large cables coming into the first room you called "Comms" to be Coax cables for Radios or links to other bunkers.

Hoooooly pancake! Loved that 😂 Love the content! So cool to see these abandoned pieces of history!!

I love seeing history. Thx for sharing

these tunnels could be used for so many things

I've always admired the engineering feats that we accomplished during this time.

wow another great location. well done.

Watching from mountains outside Lake Tahoe California Love your channel

6:44 that’s some footprints lol

Vrhunsko stanje bunkera Hvala na objavi Klipa👍

Good afternoon from Syracuse NY USA brother and everyone else thank you for sharing your adventures in history

Thanks!

RF High Frequency and big power coaxial cables, either UHF Marine radar or UHF communication transceiver around 500MHz.

What a magnificent exploration and video

My goodness what a huge complex. Did you find out why Berlin wanted this built? What was it's purpose? It just stretched on and on... I could imagine something being manufactured in this large facility or maybe it was storage in a strategic location. I am just astounded at what you found and shared with us. Thanks for taking us along! Stay safe and stay well!!

Get yourself to Guernsey to see Ww2 history

Crazy stuff . There could be another level below what you are walking on based on the access holes in the floors and their depth . You might try to take a metal detector with you next time and quite possibly find some trinkets or even old coins from the era or even a stashed weapon possibly. Good-by to the evil and hate and greed and death and destruction caused by these people and let this be a monument to their failure . Thanks for share. :O)

Those orange paint marking could be for measuring or some kind of remodeling that bunker, like 3D scaning it. Amazing find.

I'd love to be able to get up there and see where that passage goes! You would need an extendable ladder for that and those aren't easy to carry around. What an extensive tunnel system! I can only imagine the months it took to hollow all of that out. You've got to hand it to the Germans. Extremely devoted to their missons no matter what it was. What an awesome explore! Take care and stay safe. 💖💯

Ultra cool! Thanks for sharing your adventure. You should take a black light in.

You have to wonder that as the Allie’s started their bombing campaign on German targets, if the structures were built so the Germans could continue their research and development of weapons? A lot of facilities were moved underground not just storage. Somewhere in the area has to someplace or someone who knows what this was used for. It was odd to see the markings inside the bunker as if it was being surveyed. Two such huge places and interesting to see.

Ace! That's a big find.

Probably it is an ancient tunnel system, as to find thousands all over the world, that they build out for their purpose. Surprising is, that it is free to get in... Most ancient systems are filled up with stones and concrete

Great video. Most were used for mushroom farming after the war and storage.

those pink spray-paint marks are from a surveyor ,most likely measuring the inside of the tunnel

Germans was incredibly skilled builders indeed very smart and intelligent people at least i always thought you know and master's of war respect all soldiers that fight for their country

Those places are amazing and a great find, I imagine there's alot more stuff down there blocked off ready to be uncovered at some point!🤔, anyway thanks for sharing and takecare!🙂✌️

Very intriguing exploration. I was stationed at Metro Tango (15km from Hahn AB) in the late 1980’s. Made some MTB and hikes to TFC Boerfink and found other sites during my time there in the former West Germany.

That was amazing. That is cool stuff to find. If I was you, I'd buy that land by that bunker, make a museum.

What a spectacular regabow sure spelling is wrong lol. Is the bunker system really amazing. Thank you for sharing History hunter and Eagle Eye's.

I can only imagine the cost of all these bunkers & fortifications you explore. I know lots were probably built by POW labor. But I’m in construction & concrete & rebar is NOT cheap (now)!!!

Wow another great video, surprising that so much is still in good condition,

WOW! Especially, part two - great explores! The Germans were some big diggers (or their captives were). I'm not surprised to see a street level entrance to a tunnel system. Makes sense.

That is crazy!!!

you guys are so AWSOME!!!

So epic bro I want to go here I been to a few bunkers in California.

Wow. A lot of work went into that..

very Impressive and intriguing with that entrance blocked off I wonder what is behind there perhaps you go back with a portable hammer drill and find out or would that be illegal?. Imagine finding one that has never been found with gear still in there from WW2 wow what a bonus that would be lol.

Cool tunnel !!!

Hitler said, "Fortify and so they did". That underground tunnel system is huge. I can't begin to imagine the time spent planning, getting the resources needed, and constructed. I could hear EE humming in the background. That bunker was one unique bunker. A very large underground Regelbau. Very unbelievable!!! So much detail. Good question, "Why did they put it there"? I am sure you will find out and tell us. It went on and on. ....... Not just a regular run of the mill Regelbau. The Germans did an amazing job. Secrets that they keep. Thank you for doing the research and taking us there. Thank you HH and EE. I will give some $$'s soon as I can. 💕

I think the concrete spray is to keep rocks and dirt from falling onto their poured floor. It looks like they probably kept that compound clean like a house.

I was stationed at Panzer Kaserne from 1978 to 1980. I knew about the tunnels between Panzer and Patch but never got to see them.

Hmm the open hatch with the flooded water and cables inside alone with lots of rubble makes me think there’s another level below, but was maybe destroyed on purpose to hide something underneath

I would absolutely love to spend a weekend camping in one of these places.

Would love to see what was up that ladder,

They dig to deep and found a Balrog... he let no one escape

Truly astonishing how much manpower would have gone in to excavating. Could this site have been fortified communication centre. Thanks for your continued research and bringing us these fantastic locations.