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

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.

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.

Cancellation Policy

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

Options

Underground Adventure in Snowdonia

Reviews

5.00

32 reviews

Total reviews and rating from Viator & Tripadvisor

Exploring a Lead Mine
Trip510563,May 18, 2026
- Review from Tripadvisor
5.00
We had an amazing time with Sol exploring a lead mine. Sol is very knowledgeable about the mine and its history, and ensured that we had a smooth and safe trip through the various levels of the mine, would definitely recommend 👍🏼
Amazing!
tobyrN133EL,Apr 22, 2026
- Review from Tripadvisor
5.00
Absolutely fantastic day! The guide was experienced and freindly. The activities were amazing! Highly recommend! Will definately book again!
Really fun caving, very friendly and experienced guide
J5836HRmickeym,Apr 4, 2026
- Review from Tripadvisor
5.00
Our guide Sol was really nice, very generous, and very experienced. It was very wet, and he let me borrow his waterproof bottoms for the whole caving experience, and I would've been drenched without them. He clearly knew what he was doing and knew a lot about the place and told us loads of cool facts! Loads of activities to do in the cave like ziplining abseiling, and walking up a waterfall which was amazing!
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.