1. North Wales
  2. Gwynedd
  3. Harlech

Llanfair Slate Caverns

Harlech, Gwynedd
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About Llanfair Slate Caverns

The entry to Llanfair Slate Caverns, this old but significant and famous slate mine, is through the majestic main tunnel, under the spooky twin arches of the crypt, and into the lofty cathedral cavern! High adventure, only really low down!

Remember that the tunnels and caverns you are about to see are all man made over a 100 years ago with only a candle for lighting so best for competently mobile kids not too shy about the dark!

Descend Jacobs ladder and wonder through the tunnels and chambers, and look for the old drilling holes, and the likeness of a human face in the mighty no 6 cavern. It might be stating the obvious but if your children aren't keen o the dark, or being enclosed, this probably isn't a good idea. As you emerge from the caverns, you face the breathtaking view of Cardigan Bay, from the Preseli mountains in the south to the Lleyn peninsular. Look down at Shell Island and the Artro estuary, and at low tide trace the fourteen mile long natural causeway of St Patrick.

A family run attraction that celebrated 50 years in 2023!

Come and see the old slate mine left as it was by the miners over 100 years ago!

Unique sound effects of the miners working

Bring your experience to life with realistic sound effects of th eminers working!

Self guided so no waiting!

No need to wait for a guide. Your time here will be fully sekf guided and great for kids to explore without having to wait for others We have activities for Easter and October Half term.

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Facilities

  • Toilets iconToilets
  • Gift Shop iconGift Shop
  • Onsite Parking iconOnsite Parking
  • Accessible Toilets iconAccessible Toilets
  • Baby Changing iconBaby Changing
  • Food Available iconFood Available
  • Dog Friendly iconDog Friendly
  • Card Payments Accepted iconCard Payments Accepted
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Opening Times

Regular Times
  • Monday, 10:00 - 17:00
  • Tuesday, 10:00 - 17:00
  • Wednesday, 10:00 - 17:00
  • Thursday, 10:00 - 17:00
  • Friday, 00:00 - 17:00
  • Saturday, 10:00 - 17:00
  • Sunday, 10:00 - 17:00

Last entry is 1 hour before closin. Please check our Google profile for up to date times.

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Pricing & Tickets

General Admission
  • Child (5-16) : £8.00
  • Adult (17-18+) : £9.00

Family ticket (2 and 2) £32

Family ticket (2 and 3) £38.50

Book in advance for cheapest tickets

Find other attractions similar to Llanfair Slate Caverns by visiting our attraction tickets section.

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Plan Your Visit

Stopwatch IconTypical visit time 1 - 2 hours

Tick IconSuitable for Kids and Adults too

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FAQs

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Contact Details

Cae Gethin
Llanfair
Harlech
Gwynedd
LL46 2SA
Wales

Tel: 01766 780 247

Visit Website
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Verification & Last Updated

Verified Status:Verified

This attraction has been claimed and verified. All information has been recently checked.

Last Updated: 14:22 18/05/2025

Llanfair Slate Caverns Reviews

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