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The Wormhole of Inis Mór is a breathtaking natural wonder that showcases the beauty and power of nature.

This rectangular-shaped blow hole, approximately 25m long, 10m wide, and about 150 feet deep, was naturally carved by the sea in the limestone cliffs of the island, creating a stunning contrast between the turquoise water and the grey stone.

Honestly, Wormhole is a highly dangerous spot for swimming.

Essential Information For Wormhole Of Inis Mór


The Wormhole of Inis Mór is located on the west side of the island, about 1.6 km south of the ancient cliff fort of Dún Aonghasa.

Safety Tips

Wormhole Of Inis Mór is accessible all year round, but its coastline can sometimes be quite rough, so you should be careful and go in good weather. It is strongly advised not to swim in the Wormhole due to unpredictable conditions caused by incoming waves and underwater currents.

It is important to wear appropriate footwear, such as walking shoes with good grip and ankle support, as the terrain can be uneven and slippery. You should be cautious when walking on the rocks and avoid getting too close to the edge of the cliffs.

Tide Timings For the Wormhole

The pool of the Wormhole is linked to the sea through a series of underground channels, causing it to fill and empty by the ocean’s tides. To ensure safety when visiting the Wormhole, it is crucial to be aware of the tide times.

The high and low tide times for Killeany Bay, which is in the vicinity of the Wormhole, can be checked using online tide time resources.

Red Bull Cliff Diving At Wormhole Inis Mór

In 2014, the Red Bull Cliff Diving event was organized here, which consisted of diving from a height of 27 meters and performing an artistic figure.

Whether you’re admiring the scenery, listening to the sound of the waves, or feeling the breeze, a visit to the Wormhole of Inis Mór promises an unforgettable experience that will make you appreciate this hidden gem of Ireland. Here is your complete guide to exploring this natural beauty.

How To Get To Wormhole Of Inis Mór?

To get to the Wormhole of Inis Mór, the most straightforward way is by following the signs through Gort na gCapall, which is approximately a 15-20 minute walk over uneven ground from the starting point.

The journey to the Wormhole takes approximately 35-50 minutes by cycling from Kilronan Village, making it an accessible and memorable destination for visitors to the Aran Islands.

Another option is to trek east along the cliffs from Dún Aonghasa, where painted rock markings indicate the way. However, keep in mind that your journey to Wormhole will be by cycling or walking from nearby areas such as Kilronan Village or Dún Aonghasa. Click here if you want to rent a bike.

There are also tours available that you can explore and get to this natural wonder with them.

Places to visit near Wormhole of Inis Mór

Dún Aonghasa

Dún Aonghasa is a significant historical and archaeological site located on Inis Mór. It is one of the most visited attractions in Ireland, known for its dramatic location on a 300-foot cliff overlooking the Atlantic Ocean.

The site also features a small museum illustrating the history of the fort and its possible functions which is perfect to explore Ireland’s prehistoric past.

Kilronan Village

Kilronan Village, also known as Cill Rónáin, is the main settlement on Inis Mór, the largest of the Aran Islands off the coast of County Galway in Ireland. This picturesque and vibrant village serves as the primary hub for visitors to the island.

The village is well-equipped with various facilities, including a supermarket, ATM, fast food options, a post office, a bank, a medical center, and a community hall that hosts cultural events during the summer months. So you can easily rest there after your visit to the Wormhole.

There are also some restaurants there such as Pier House, Óstán Árainn Restaurant and Bar, and Man of Aran Café.

Frequently Asked Questions (FAQs)

Can you swim in the Wormhole of Inis Mór?

No, it is strongly advised not to swim in the Wormhole of Inis Mór. The water off the coast of the Aran Islands is extremely turbulent and dangerous due to strong currents and unpredictable conditions caused by incoming waves and underwater currents.

What is the Wormhole in Aran Islands’ history?

The Wormhole, also known as Poll na bPéist or The Serpent’s Lair is a natural rectangular pool located on the west side of Inis Mór, the largest of the Aran Islands in Ireland. It was formed naturally in the limestone rock and features underwater channels that connect to the sea. The pool is about 10 meters long, 7 meters wide, and 4 meters deep.

What are some fun facts about Inis Mór?

Inis Mór is the largest of the three Aran Islands, covering 7,635 acres, and is home to several ancient stone forts and churches.

Inis Mór is a major tourist destination, known for its karst landscape, ancient and medieval ruins, and a wealth of flora and fauna.

What does Inis Mór mean?

The name “Inis Mór” translates to “big island” in English. It is the largest of the three Aran Islands, covering approximately 12km in length and 3km in width.


Wormhole of Inis Mór is a natural wonder that hosts a diverse number of people with different interests and hobbies. It is sure to leave you with a sense of awe and mystery whether you’re an extreme sports enthusiast, a nature lover, or a curious traveller.

If you’re interested in visiting Inis Mór, here is another useful resource to explore this place.

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