Firstly, I'm new to the site so thanks for having me. I hope my first post is in the right place and in the correct format.
The German war tunnels in Jersey ('hohlgangsanlage') are well documented on 28DL and I believe some people from the UK have been over in recent years to explore them. I live fairly close to two of these (HO1 & HO2) in St. Peter's Valley on the south end of Rue de l'Aleval. I noticed the other day that both tunnels were open and I've been in a few times to take a look. HO1 remains in use as a commercial mushroom farm whilst HO2 is an unfinished tunnel on the opposite side of the road. Like most of the holgangsanlage these two are circular in layout with two entrances.
HO2 feels the more eerie of the two with some fairly sinister-looking canisters left over from the war lying midway along the first of the concreted sections. The majority of this tunnel is, however, bare rock of varying quality. There is evidence of recent access with food and drink debris scattered around and string laid on the floor presumably to allow egress if torches failed. Some graffiti on the central concrete section looks quite fresh. Of particular note is an in-situ bat detection device just inside the north entrance. This has been placed within the past seven days as it wasn't there last weekend. Please leave this be if you plan on exploring the tunnel any time soon. I didn't check the far concreted section as my mate was getting a bit freaked out by then so we left by the south exit. The air quality throughout was stale and given the aforementioned material we both wore masks. There's a video link below of the inside of HO2.
HO1: The metal gate at the south entrance to HO1 (next to the cottage) looks closed but is currently unlocked. HO1 is larger and more complete than HO2 and about half of the tunnel is fully concreted. Explorers should be aware that this tunnel is in use and to respect the property and fixtures found inside. Following the tunnel north leads to a fork with a blockage to the right. The left-hand route soon leads to bare rock with some dodgy-looking pit props and metal work. The first small side branch on the left takes you back parallel to the main section with the promise to join it at the tunnel's south entrance judging from the plans. However we found a blockage at that point so we had to retrace our steps all the way back. Midway along this bare-rock section is an old military vehicle that I was told was German (see photo below). The tyres, however, appear to have English writing on them so it's probably an allied vehicle left from when the tunnels were cleared after WW2. I have included a video link showing the intact section of HO1.
It's unusual to find these tunnels accessible. No doubt they'll be resealed and locked in the near future. In the meantime, I can be contacted should anyone need additional information or would like to explore them in person. If you're going in by yourself just be aware that the tunnels are hazardous. Make certain someone knows where you are in case anything happens and you fail to return. As an aside, I have only recently discovered the online world of urbexing despite having undertaken exploration on my own for many years. If anyone living in Jersey would like to get in touch to exchange stories or information then just drop me a line. Thanks.
HO2 near exit to the south
HO1 main section
Abandoned vehicle in HO1
Northern exit of HO1
The German war tunnels in Jersey ('hohlgangsanlage') are well documented on 28DL and I believe some people from the UK have been over in recent years to explore them. I live fairly close to two of these (HO1 & HO2) in St. Peter's Valley on the south end of Rue de l'Aleval. I noticed the other day that both tunnels were open and I've been in a few times to take a look. HO1 remains in use as a commercial mushroom farm whilst HO2 is an unfinished tunnel on the opposite side of the road. Like most of the holgangsanlage these two are circular in layout with two entrances.
HO2 feels the more eerie of the two with some fairly sinister-looking canisters left over from the war lying midway along the first of the concreted sections. The majority of this tunnel is, however, bare rock of varying quality. There is evidence of recent access with food and drink debris scattered around and string laid on the floor presumably to allow egress if torches failed. Some graffiti on the central concrete section looks quite fresh. Of particular note is an in-situ bat detection device just inside the north entrance. This has been placed within the past seven days as it wasn't there last weekend. Please leave this be if you plan on exploring the tunnel any time soon. I didn't check the far concreted section as my mate was getting a bit freaked out by then so we left by the south exit. The air quality throughout was stale and given the aforementioned material we both wore masks. There's a video link below of the inside of HO2.
HO1: The metal gate at the south entrance to HO1 (next to the cottage) looks closed but is currently unlocked. HO1 is larger and more complete than HO2 and about half of the tunnel is fully concreted. Explorers should be aware that this tunnel is in use and to respect the property and fixtures found inside. Following the tunnel north leads to a fork with a blockage to the right. The left-hand route soon leads to bare rock with some dodgy-looking pit props and metal work. The first small side branch on the left takes you back parallel to the main section with the promise to join it at the tunnel's south entrance judging from the plans. However we found a blockage at that point so we had to retrace our steps all the way back. Midway along this bare-rock section is an old military vehicle that I was told was German (see photo below). The tyres, however, appear to have English writing on them so it's probably an allied vehicle left from when the tunnels were cleared after WW2. I have included a video link showing the intact section of HO1.
It's unusual to find these tunnels accessible. No doubt they'll be resealed and locked in the near future. In the meantime, I can be contacted should anyone need additional information or would like to explore them in person. If you're going in by yourself just be aware that the tunnels are hazardous. Make certain someone knows where you are in case anything happens and you fail to return. As an aside, I have only recently discovered the online world of urbexing despite having undertaken exploration on my own for many years. If anyone living in Jersey would like to get in touch to exchange stories or information then just drop me a line. Thanks.
HO2 near exit to the south
HO1 main section
Abandoned vehicle in HO1
Northern exit of HO1
Last edited:
