Tours of Slieve League

Guided Tours

Award winning Tour Guide

Voted Best Outdoor Activity in County Donegal 2023

Highland Radio Tourism & Hospitality Awards 


The Slieve League cliffs are the highest accessible sea cliffs in Ireland and the third highest in Europe.
They stand at 601 metres or 1,972 feet above sea level

Thousands of visitors flock to the cliffs every year. Slieve League forms part of the international Appalachian Trail which includes Ireland, Northern Ireland, Britain, Europe and the United States and Canada. It covers 3,100 kilometres of trail. A tall mountain of nearly 2,000 feet, precipitous on its northern side, has been devoured by the sea till the southern face forms a precipice likewise, descending on this side right into the Atlantic from the long knife-edge which forms the summit.

The traverse of this ridge, the ”One Man’s Path”, is one of the most remarkable walks to be found in Ireland – not actually dangerous, but needing a good head and careful progress on a stormy day…The northern precipice, which drops 1,500 feet into the coomb surrounding the Little Lough Agh, harbours the majority of the alpine plants of Slieve League, the most varied group of alpines to be found anywhere in Donegal.


pure nature

breathtaking views


wild atlantic way

enjoy magnificient views


your guide

teresa cassidy


I am a fully qualified and certified local and national tour guide with five years of experience in the tourism sector. I am a native of Teelin where the Slieve League cliffs are situated. I have a wealth of knowledge of many local area including history, folklore, way of living and culture of the area.

00353 ( 86 ) 361 5333


Clodagh, Dublin, Ireland, August 2020

Great experience with Teresa, lots of expert knowledge and very interesting insight to the area!
Response from Teresa: Clodagh, you and your mum were so lovely. Thanks again for your lovely review!

Clodagh, Dublin, Ireland, August 2020

Erin, Cork, Ireland, July 2021

We had the best time! The stories and history were amazing and the kids were engaged and having fun the whole time! If you are looking for a guide I highly recommend!!!

Erin, Cork, Ireland, July 2021

Anita, Cratloe, Ireland June 2021

Excellent informative guide and made the overall experience more relevant and informative. Recommend it!

Anita, Cratloe, Ireland, June 2021

Sid, Campbeltown, United Kingdom, August 2021

This is an excellent way to see Slieve League cliffs. Theresa hives a very good guided tour and the walking us very easy on a tarred road to the view points. It is also interesting to learn things from the other people on the guided walk. The views even on a dull day were spectacular. Theresa's stories and information were fascinating. It was a great experience, well worth the money.

Sid, Campbeltown, United Kingdom August 2021

Olivia, Ireland, May 2021

We had a brilliant time visiting Sliabh Liag with Teresa. She was so friendly and shared great knowledge and folklore about the area. Even the walk up to the cliffs was stunning. The goodies and coffee at the end was a lovely welcome treat:) Would recommend to book this experience with her.

Olivia, Ireland May 2021

Roger, England, United Kingdom, September 2021

Nice relaxed 2 hour's

Roger, England, United Kingdom September 2021

Ryan, Rochester, MI, September 2021

Theresa was amazingly lively and knowledgeable. You can tell she has a passion for introducing people to her homeland and the views are more than incredible...read more

Ryan, Rochester, MISeptember 2021

Rebecca, Dublin, Ireland, October 2021

Teresa was a lovely host for this tour. It is a walking tour and at the end you can climb further up the mountain if you wish.

Rebecca, Dublin, Ireland October 2021

Helena, Victoria, Canada, September 2021

Teresa is lovely and engaging and she knows a lot about the location, the folklore and is a patient guide. Enjoyed every moment including the downpour and wind, which ...read more

Helena, Victoria, Canada September 2021

Therese, Ireland, August 2021

Teresa was lovely tour guide! She was knowledgable about local history. Very easy to talk to!

Therese, IrelandAugust 2021

Alun Rolph

This is much more than just a guided walk round the cliffs. Teresa is extremely knowledgeable and has close family ties to significant local history. As well as seeing the best the cliffs have to offer you will learn so much about the local area and local history. Well recommended

Alun Rolph

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