Underground Adventure in Snowdonia

Overview

Available languages

English

5 hours

Mobile ticket

This is an authentic experience exploring an abandoned mine, with various optional challenges; involving climbing, an abseil, a tyrolean (short zipline) and a short boat crossing.

There isn't anything artificial about this trip with the addition of safety anchors being the only changes you'll find in the mine, where necessary, as such, it is most similar to caving with the only lights being those on your headtorches (provided).

This is the perfect family adventure, Stag/Hen do activity and couple challenge.

Additional Info

Not recommended for travelers with spinal injuries

Not recommended for pregnant travelers

Travelers should have at least a moderate level of physical fitness

Cancellation Policy

For a full refund, cancel at least 24 hours before the scheduled departure time.

What‘s Included

We only provide use of safety equipment such as Helmets, Headtorches, Harnesses and Layards. All personal equipment must be brought with you or requested 48 hours beforehand.

We do not provide any form of clothing, please bring your own waterproofs and warm clothes.

We do not provide Wellies as standard. We can provide Wellies if requested 48 hours beforehand.

What To Expect

Explore an abandoned underground slate mine following the old quarryman's footsteps, with various optional challenges along the way, including; climbing, an abseil, a short tyrolean/ zipline and a short boat crossing. All of which can be avoided by scrambling around. This is an authentic experience with the only changes to the mine being the addition of safety anchors where necessary, as such, it is most similar to caving with the only lights being those on your headtorches (provided). There will be options to learn about history and processes that created these caverns and tunnels, for those that are interested. If you've been underground before, get in touch, we have a number of underground adventures to keep you coming back for more. This activity is very popular with families and school groups, but we also guide a number of couples and adult groups. There is about a 30minute walk up hill to approach this mine and at the end of the trip you'll emerge near the top of the mountain and hopefully have lovely views walking down. All under 18's must be accompanied by their parent or legal guardian.

Options

Underground Adventure in Snowdonia

Reviews

5.00

29 reviews

Total reviews and rating from Viator & Tripadvisor

Best family day out in ages (maybe ever???)
C8471DDhelens,
Aug 29, 2025
- Review from Tripadvisor
5.00
We did this trip as part of our family holiday, with my kids aged 6,9 and 11. We all loved it. The trip leader was brill. He tailored the experience to what we needed. Gave loads of interesting facts about the mine and was really encouraging and kind, supporting the kids to do things that were out of their comfort zone. One of the best days out we have had in ages. A really unique experience, we loved it. Definitely value for money
Caving adventure in snowdonia
Nomad29837518052,
Jul 28, 2025
- Review from Tripadvisor
5.00
One of my best days out ever, Sol was a brilliant guide, very knowledgable and with amazing patience considering the mixture of abilities in our group. I will definitely book again.
Amazing guide
Resort11024278596,
Jul 23, 2025
- Review from Tripadvisor
5.00
Sol was incredibly professional, and we, a group of four, thoroughly enjoyed our caving adventure with him. We felt safe and guided throughout the experience, and we particularly loved the history lessons he shared about the caves.
UNDERGROUND SLATE ADVENTURE - EXELLANT
Y6476IBbernadetteh,
Jun 1, 2025
- Review from Tripadvisor
5.00
Went on the underground slate adventure during the May half term with my husband and 8 year old son. The experience was AMAZING exploring the labyrinth of the slate mines with a boat ride, zip lining, abseiling and climbing a waterfall. Sol our guide was fantastic and so knowledgable. I would not hesitate to book another trip with adventure activities, such a brilliant experience with so many happy memories made. Thank you Sol 👍
Really fun activities....
Nuha H,
Apr 7, 2025
- Review from Viator
5.00
Really fun activities. Sam was great. Really interesting hearing about the history of the mines too.
My husband and I took our...
Isla E,
Mar 5, 2025
- Review from Viator
5.00
My husband and I took our 11 year old son on the underground adventure with Sol and it far exceeded our expectations. Our son loves adventure and gets bored easily but over the 4 hours we spent with Sol, he kept things engaging and the activities involved were suitable for an 11 year old, but added a sense of controlled ‘danger’ which held my sons enthusiasm and interest (he’s an adrenaline seeker). For me personally, I have a couple of injuries which limited my ability to participate in some of the activities, which wasn’t a problem. Sol had alternative ways to move forward which did not require scrambling, zip lining or abseiling. My husband had a great time and also felt the activities were the right level of difficulty to be a challenge but not too hard. All in all, a very enjoyable experience.
Very enjoyable family activity in Wales
Isles39,
Mar 5, 2025
- Review from Tripadvisor
5.00
My husband and I took our 11 year old son on the underground adventure with Sol and it far exceeded our expectations. Our son loves adventure and gets bored easily but over the 4 hours we spent with Sol, he kept things engaging and the activities involved were suitable for an 11 year old, but added a sense of controlled ‘danger’ which held my sons enthusiasm and interest (he’s an adrenaline seeker). For me personally, I have a couple of injuries which limited my ability to participate in some of the activities, which wasn’t a problem. Sol had alternative ways to move forward which did not require scrambling, zip lining or abseiling. My husband had a great time and also felt the activities were the right level of difficulty to be a challenge but not too hard. All in all, a very enjoyable experience.
Underground Slate Mine Adventure
Sherpa49090083490,
Feb 19, 2025
- Review from Tripadvisor
5.00
We did the Underground Adventure yesterday in the slate mines with our 2 children aged 13 & 8 with Sol and his team. We have never done anything like this before as a family but we can honestly say we had the best afternoon. Sol, Jess & Russ were so knowledgeable, encouraging and made sure we were all safe when carrying out all the activities! The kids loved learning to rock climb, abseil and zip wire Underground and learning the history of the abandoned slate mines was fantastic as well. I would highly recommend this authentic experience & would book again with sol & his team.
Never done anything like it before!
Richard J,
Aug 9, 2024
- Review from Viator
5.00
This was an amazing activity, truly fantastic 100% would do it again. Sol and Dom were brilliant instructors and we learned a lot as well.
Family Caving in an old slate mine
W541BBtims,
May 31, 2024
- Review from Tripadvisor
5.00
Me and my boys age 10, 10 and 12 joined Sol on a caving experience in the old slate mine. Thoroughly enjoyable, Sol had a slightly earlier start to avoid bumping into the larger groups. There was 6 of us in total and Sol showed us round the mine with a few history lessons on the way. The mines were impressive along with a mini zip line, abseil and the walk up the waterfall. We had a great day out, thank you Sol.