The Worm Hole on Inis Mór (Inishmore) Island, also known as Poll na bPéist or The Serpent’s Lair, is a natural rectangular pool that was carved by the sea in the limestone rocks of the island, creating a stunning contrast between the turquoise water and the grey stone.

The Worm Hole is located on the west side of Inis Mór, about 1.6 km south of the ancient cliff fort of Dún Aonghasa. You can reach it by following the signs from Gort na gCapall, a small village near Kilmurvey Beach, or by walking along the cliffs from Dún Aonghasa, where you will see painted rocks indicating the way. Be prepared to walk across loose, jagged and uneven rocks, especially as you get closer to the pool. You will need good footwear to get there.

The pool is connected to the sea by underwater channels that allow the water to flow in and out with the tide. Sometimes, waves crash over the edge of the pool, filling it from above. The water level and colour change depending on the weather and the time of day, creating different effects and moods. The pool is about 10 metres long, 7 metres wide and 4 metres deep.

The Worm Hole is a popular spot for cliff diving, especially since it hosted stages of the Red Bull Cliff Diving World Series in 2012 and 2017. The divers jumped from a platform 28 metres above the water into the narrow opening of the pool, performing impressive acrobatic feats. However, this is not something that you should attempt unless you are a professional diver with proper safety measures. The currents and waves can be very strong and unpredictable, and there is no easy way to get out of the pool once you are in, just a small rope ladder.

The Worm Hole is a natural wonder that showcases the beauty and power of nature. It is a place where you can admire the scenery, listen to the sound of the waves, feel the breeze and enjoy a sense of awe and mystery. According to legend, the pool is actually a serpent’s lair, and some locals believe that it has healing properties.

If you visit the Worm Hole on Inis Mór, you will have an unforgettable experience that will make you appreciate this hidden gem of Ireland.


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The Wormhole




September 29, 2022

I get the impression this formation is in fact manmade and perhaps tens of thousands of years old. The symmetrical accuracy of the rectangle is much too prominent to ignore. I wonder what artifacts or treasures lie in the channels within the cave system underneath? What a perfect place to ensure no tampering of any priceless belongings, etc. A very beautiful and intriguing place indeed!

Summer Sunshine

Beautiful creation

September 27, 2022

This is no natural formation, it’s parallel side walls are too symmetrical t9 be natural, the rest of the formation shows erosion, this leads me to believe this was honed into an entryway to the portal. Also there appears to be an entryway carved into the pool towards the ocean.

Erikir Scogi, Gods of Adamu.