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The Devil’s Cauldron might sound like something straight from the bowels of hell, but it’s actually the nickname of an interesting geological feature on the coastal path in Pembrokeshire.

Keep reading to find out exactly what it is, how it was formed, and how you can visit like I recently did.

What is the Devil’s Cauldron?

The Devil’s Cauldron (also known as ‘The Devil’s Punchbowl’) is a large enclosed shaft near the coastline in Pembrokeshire.

Initially, The Devil’s Cauldron would have been several caves in the cliffside. These would have turned into blow hole caves which is when the pressure of the water thrust into the cave causes the cave to erode upwards and eventually the water comes out through a hole in the surface, like the blow hole of a whale.

Erosion of these blow-hole caves under the ground would have continued until a critical point was reached and the entire structure collapsed, leaving the cauldron-like formation we see today1 (source: A.S. Goudie and R. Gardner, Discovering Landscape in England & Wales, 2013).

One day in the future, continued erosion will cause the cauldron to become a series of arches and stacks, similar to the nearby Green Bridge of Wales and Stack Rocks.

Note: ‘The Devil’s Cauldron’ should not be confused with ‘The Witches Cauldron’ which is a similar (but more impressive) landmark also in West Wales near Cardigan.

How to Visit The Devil’s Cauldron

To visit the Devil’s Cauldron in Pembrokeshire, head towards the village of Warren and follow Ermigate lane to Stack Rocks car park. From here, it is a 500m walk to The Devil’s Cauldron which takes around 6 minutes.

The path is well trodden and made up of short grass which is reasonably suitable for pushchairs and wheelchairs. On the way, you’ll pass the Green Bridge of Wales and Stack Rocks which are also impressive natural formations worth checking out.

If visiting by public transport, there is a bus stop at Stack Rocks car park too. The bus stop is served by the Pembrokeshire Coastal Cruiser route 387 or 388 which both run from Pembroke and are wheelchair accessible.

The number of buses varies between peak and off-peak seasons so I recommend checking out the latest timetables here to ensure you don’t get stuck.

Opening Times and Entry Fees

There is no cost to visit the Devil’s Cauldron and it’s open 24 hours a day, 7 days per week. However, it is part of the Castlemartin Firing Range so access may be prohibited during military training. Information will be published here ahead of time.

Where to Park for The Devil’s Cauldron

Parking for The Devil’s Cauldron is at Stack Rocks car park. This is a large car park that’s open 24 hours per day, 7 days per week. There are no parking charges. Here is the location of the car park:

Other Nearby Landmarks

This area is home to several impressive landmarks, both natural and manmade, that are worth checking out:

  • Stack Rocks – Right next to The Devil’s Cauldron are Stack Rocks, two limestone pillars that have become detached from the mainland due to coastal erosion.
  • The Green Bridge of Wales – Also nearby is the Green Bridge of Wales which is an arch caused when two opposing caves got deeper and met due to coastal erosion. This is how Stack Rocks would have looked before the arches collapsed.
  • The Huntsman’s Leap – This is a deep, narrow chasm in the Earth caused by erosion along a fault line.
  • St Govan’s Chapel – Near the Huntsman’s Leap is St Govan’s Chapel, a tiny stone chapel built into the cliffside that has roots back as far as the 5th and 6th centuries.

If you’re visiting Pembrokeshire or the nearby areas, you may want to check out my guide to the best things to do in West Wales for more inspiration.

Kieren is the founder and editor-in-chief of Wales Guidebook. Originally from rural Mid-Wales, he has lived all over the country from Cardiff to Wrexham. A true Welshman, Kieren created this site to share his passion for Wales and help others discover this beautiful country.