The Cliffs of Moher (; ) are
sea cliffs located at the southwestern edge of
the Burren
The Burren ( ; ) is a karst/glaciokarst landscape centred in County Clare, on the west coast of Republic of Ireland, Ireland. region in
County Clare
County Clare () is a Counties of Ireland, county in the Provinces of Ireland, province of Munster in the Southern Region, Ireland, Southern part of Republic of Ireland, Ireland, bordered on the west by the Atlantic Ocean. Clare County Council ...
, Ireland.
They run for about . At their southern end, they rise above the
Atlantic Ocean
The Atlantic Ocean is the second largest of the world's five borders of the oceans, oceanic divisions, with an area of about . It covers approximately 17% of Earth#Surface, Earth's surface and about 24% of its water surface area. During the ...
at
Hag's Head, and, to the north, they reach their maximum height of just north of
O'Brien's Tower,
a round stone tower near the midpoint of the cliffs, built in 1835 by
Sir Cornelius O'Brien,
then continue at lower heights. The closest settlements are the villages of
Liscannor
Liscannor () is a coastal village in County Clare, Ireland. It is located between Lahinch and Doolin, close to the Cliffs of Moher. As of the 2022 census it had a population of 135.
Geography
Lying on the west coast of Ireland, on Liscan ...
to the south, and
Doolin to the north.
From the cliffs, and from atop the tower, visitors can see the
Aran Islands
The Aran Islands ( ; , ) or The Arans ( ) are a group of three islands at the mouth of Galway Bay, off the west coast of Republic of Ireland, Ireland, with a total area around . They constitute the historic barony (Ireland), barony of Aran in ...
in
Galway Bay, the
Maumturks and
Twelve Pins mountain ranges to the north in
County Galway
County Galway ( ; ) is a Counties of Ireland, county in Republic of Ireland, Ireland. It is in the Northern and Western Region, taking up the south of the Provinces of Ireland, province of Connacht. The county population was 276,451 at the 20 ...
, and
Loop Head to the south.
The cliffs rank among the most visited tourist sites in Ireland, with around 1.5 million visits per year.
Name
The cliffs take their name from an old
promontory fort
A promontory fort is a fortification, defensive structure located above a steep cliff, often only connected to the mainland by a small neck of land, thus using the topography to reduce the Rampart (fortification), ramparts needed.
The oldest kno ...
called ''Mothar'' or ''Moher'', which once stood on Hag's Head, the southernmost point of the cliffed coast, now the site of
Moher Tower. The writer
Thomas Johnson Westropp referred to it in 1905 as ''Moher Uí Ruis'' or ''Moher Uí Ruidhin''.
The fort still stood in 1780 and is mentioned in an account from John Lloyd's ''A'' ''Short Tour of Clare'' (1780). It was demolished in 1808 to provide material for a lookout/telegraph tower that was intended to provide warning in case of a French invasion during the Napoleonic wars.
Tourism
The cliffs are one of the most popular tourist destinations in Ireland and topped a list of attractions in 2006 by receiving almost one million visitors at the official visitor centre. With additional visitors to other locales included there are around 1.5 million a year. In 2022, approximately 1.1 million visited the Cliffs of Moher, with 41% arriving from the U.S. Since 2011, they have formed a part of the
Burren and Cliffs of Moher Geopark, one of a family of
geotourism
Geotourism is tourism associated with geological attractions and destinations. Geotourism (tourism with a geological base) deals with the abiotic natural and built environments.Sadry, B.N.(2009)''Fundamentals of Geotourism: with special emphasis ...
destinations throughout Europe that are members of the
European Geoparks Network
The European Geoparks Network (EGN) functions as the regional organization of the Global Geoparks Network (GGN) and the UNESCO International Geosciences and Geoparks Programme (UNESCO-IGGP). Its main objective is to ensure cooperation between geop ...
and also recognized by
UNESCO
The United Nations Educational, Scientific and Cultural Organization (UNESCO ) is a List of specialized agencies of the United Nations, specialized agency of the United Nations (UN) with the aim of promoting world peace and International secur ...
. The cliffs are also a "signature point" on the official
Wild Atlantic Way
The Wild Atlantic Way () is a Scenic route, tourism trail on the west coast, and on parts of the north and south coasts, of Ireland. The 2,500 km (1,553 mile) driving route passes through nine Counties of Ireland, counties and three Provinces ...
tourist trail.
While the cliffs can be accessed at multiple points, and there is an Cliff Walk, the majority of visitors come to the official visitor centre.
Visitor centre

In the 1990s the local authority,
Clare County Council, initiated development plans to enable visitors to experience the cliffs without significant intrusive man-made amenities. In keeping with this approach, a modern visitor centre, the Cliffs of Moher Visitor Experience, was built into a hillside approaching the cliffs. The centre was planned to be environmentally sensitive in its use of renewable energy systems including geothermal heating and cooling, solar panels, and grey water recycling.
The €32 million facility was planned and built over a 17-year period and officially opened in February 2007. Exhibits include interactive media displays covering the geology, history, flora and fauna of the cliffs. A large multimedia screen displays a bird's-eye view from the cliffs, as well as video from the underwater caves below the cliffs. There are also two cafés and several shops.
Visitor numbers
The visitor experience recorded 1,427,000 visits in 2016, up 14% on 2015, and up 52% in off-peak December, for example. In 2017 the Cliffs of Moher was the second most popular 'fee charging' tourist attraction in the country with 1,527,000 visitors. This increased again by 3.8% in 2018 to 1,580,010 visitors.
The nature and speed of increase in visitor numbers has led to some capacity problems at peak times and in peak season. To counter this, visitors are increasingly encouraged to come at other times, with discounts given to coach operators who book for off-peak slots, and late opening of the centre introduced for July and much of August. Later-arriving visitors have also been facilitated by the fitting of automatically opening exit gates from the official car parking facilities.
Recognition
The Cliffs of Moher Visitor Experience won an award in the Interpret Britain & Ireland Awards 2007 awarded by the Association of Heritage Interpretation (AHI). Although the award was specifically for the Atlantic Edge exhibition, the AHI assessed the entire visitor centre and site. The citation stated that the entire visitor centre was "one of the best facilities that the judges had ever seen."
Viewing
The official Cliffs of Moher Coastal Walk runs for 18 km, from Hag's Head to Doolin, passing the Visitor Centre and O'Brien's Tower.
There are two paths near the visitor centre, the official one being set back a little for safety, while an unofficial path runs closer to the edge. In July 2016, the so-called Cliff Walk, outside the official Cliffs of Moher amenities, was temporarily closed because of the risk of rock falls. People were warned to stay on the official path further off the cliff edge instead of the unofficial seaside trail. Injury and even casualties from visitors straying off the trail continued to be a problem despite signage and other prevention initiatives. In February 2025, the coastal walking trail was closed due to these safety issues.
Separate ferry trips also allow tourists to view the cliffs from sea level, and at certain times fixed-wing aircraft from Connemara Airport also provide a viewing opportunity.
Geology and wildlife

The cliffs consist mainly of beds of
Namurian shale
Shale is a fine-grained, clastic sedimentary rock formed from mud that is a mix of flakes of Clay mineral, clay minerals (hydrous aluminium phyllosilicates, e.g., Kaolinite, kaolin, aluminium, Al2Silicon, Si2Oxygen, O5(hydroxide, OH)4) and tiny f ...
and
sandstone
Sandstone is a Clastic rock#Sedimentary clastic rocks, clastic sedimentary rock composed mainly of grain size, sand-sized (0.0625 to 2 mm) silicate mineral, silicate grains, Cementation (geology), cemented together by another mineral. Sand ...
, and the oldest rocks are at the bottom of the cliffs. During the time of their formation between 313 and 326 million years ago, a river dumped sand, silt and clay into an ancient marine basin. Over millions of years, the sediments collecting at the mouth of this ancient delta were compacted and lithified into the sedimentary strata preserved in the now-exposed cliffs. The area is considered a geologic laboratory that preserves a record of deltaic deposition in deep water. Individual strata vary in thickness from just a few centimetres to several metres, each representing a specific depositional event in the history of the delta. In aggregate, up to 200 metres of sedimentary rocks are exposed in the Cliffs of Moher.
Trace fossils
A trace fossil, also called an ichnofossil (; ), is a fossil record of biological activity by lifeforms, but not the preserved remains of the organism itself. Trace fossils contrast with body fossils, which are the fossilized remains of part ...
are abundant, comprising two main types: (1)
scolicia or worming trails, which are interpreted as feeding trails left by as-yet-unidentified invertebrates, and (2) burrow marks, which are circular features preserved as casts of burrows once occupied by as-yet-unidentified marine creatures. Ripple marks are preserved in some stones.
Today the cliffs are subject to erosion by wave action, which undermines the base of support causing the cliff to collapse under its own weight. This process creates a variety of coastal landforms characteristic of erosional coasts such as sea caves,
sea stacks, and sea stumps. Branaunmore, a 67-metre high sea stack at the foot of the Cliffs of Moher below O'Brien's Tower, was once part of the cliffs, but
coastal erosion
Coastal erosion is the loss or displacement of land, or the long-term removal of sediment and rocks along the coastline due to the action of Wind wave, waves, Ocean current, currents, tides, wind-driven water, waterborne ice, or other impacts ...
gradually removed the layers of rock that joined it with the mainland. A large sea arch can also be seen at Hag's Head below the Napoleonic signal tower and many smaller sea arches can be seen from sea level.
It is possible to see 300-million-year-old river channels cutting through, forming
unconformities
An unconformity is a buried erosion surface, erosional or non-depositional surface separating two Rock (geology), rock masses or Stratum, strata of different ages, indicating that sediment deposition was not continuous. In general, the older layer ...
at the base of the cliffs.
At peak season, there are an estimated 30,000 pairs of birds living on the cliffs, representing more than 20 species.
These include
Atlantic puffin
The Atlantic puffin ('), also known as the common puffin, is a species of seabird in the auk family (biology), family. It is the only puffin native to the Atlantic Ocean; two related species, the tufted puffin and the horned puffin being found ...
s, which live in large colonies at isolated parts of the cliffs and on the small Goat Island,
and
razorbill
The razorbill (''Alca torda'') is a North Atlantic colonial seabird and the only extant member of the genus ''Alca (bird), Alca'' of the family Alcidae, the auks. It is the closest living relative of the extinct great auk (''Pinguinus impennis' ...
s.
The site is an
Important Bird Area
An Important Bird and Biodiversity Area (IBA) is an area identified using an internationally agreed set of criteria as being globally important for the conservation of bird populations.
IBA was developed and sites are identified by BirdLife Int ...
.
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A wide range of sea life can also be seen, from
grey seals through
porpoise
Porpoises () are small Oceanic dolphin, dolphin-like cetaceans classified under the family Phocoenidae. Although similar in appearance to dolphins, they are more closely related to narwhals and Beluga whale, belugas than to the Oceanic dolphi ...
s,
dolphin
A dolphin is an aquatic mammal in the cetacean clade Odontoceti (toothed whale). Dolphins belong to the families Delphinidae (the oceanic dolphins), Platanistidae (the Indian river dolphins), Iniidae (the New World river dolphins), Pontopori ...
s,
minke whale
The minke whale (), or lesser rorqual, is a species complex of baleen whale. The two species of minke whale are the common (or northern) minke whale and the Antarctic (or southern) minke whale. The minke whale was first described by the Danish na ...
s and
basking shark
The basking shark (''Cetorhinus maximus'') is the second-largest living shark and fish, after the whale shark. It is one of three Planktivore, plankton-eating shark species, along with the whale shark and megamouth shark. Typically, basking sh ...
s, as well as, occasionally,
sunfish. On land, feral goats, foxes, badgers and the
Irish hare are found, along with various breeds of farm cattle.
Popular culture
The Cliffs of Moher have appeared in numerous media. In cinema, the cliffs have appeared in several films, including ''
The Princess Bride'' (1987) (as the filming location for "The Cliffs of Insanity"), ''
Harry Potter and the Half-Blood Prince
''Harry Potter and the Half-Blood Prince'' is a fantasy novel written by British author J. K. Rowling. It is the sixth and penultimate novel in the ''Harry Potter'' series, and takes place during Harry Potter's sixth year at the wizard scho ...
'' (2009) (as the filming location for where
Harry Potter
''Harry Potter'' is a series of seven Fantasy literature, fantasy novels written by British author J. K. Rowling. The novels chronicle the lives of a young Magician (fantasy), wizard, Harry Potter (character), Harry Potter, and his friends ...
and
Professor Dumbledore are looking for a
horcrux in a sea cave), ''
Leap Year
A leap year (also known as an intercalary year or bissextile year) is a calendar year that contains an additional day (or, in the case of a lunisolar calendar, a month) compared to a common year. The 366th day (or 13th month) is added to keep t ...
'' (2010) and ''
Irish Wish'' (2024). The cliffs are mentioned in the Martin Scorsese film ''
Bringing Out the Dead'' (1999) and are noted in the 2008 documentary ''
Waveriders
''Waveriders'' is a 2008 documentary film produced by Margo Harkin and directed by Joel Conroy.
Synopsis
''Waveriders'' focuses on the Irish roots of surfing. The film covers the life of Irish-Hawaiian surfer George Freeth and his influence in ...
'' as the location of a
large surfing wave known as "Aileens".
In music, the cliffs have been the scene for music videos, including
Maroon 5
Maroon 5 is an American pop rock band from Los Angeles, California. It consists of lead vocalist and rhythm guitarist Adam Levine, rhythm guitarist and keyboardist Jesse Carmichael, lead guitarist James Valentine (musician), James Valentine, d ...
's "Runaway",
Westlife
Westlife are an Irish pop group formed in Dublin in 1998. The group consists of members Nicky Byrne, Shane Filan, Kian Egan and Mark Feehily. Brian McFadden was a member before leaving in March 2004. The group disbanded in 2012 and later reun ...
's "
My Love", and
Rich Mullins
Richard Wayne Mullins (October 21, 1955 – September 19, 1997) was an American contemporary Christian music singer and songwriter best known for his contemporary worship music, worship songs "Awesome God" and "Sometimes by Step". Some of his ...
' "The Color Green". In 1999, most of singer
Dusty Springfield
Mary Isobel Catherine Bernadette O'Brien (16 April 1939 – 2 March 1999), better known by her stage name Dusty Springfield, was a British singer. With her distinctive mezzo-soprano voice, she was a popular singer of blue-eyed soul, Pop mus ...
's ashes were scattered at the cliffs by her brother
Tom. There is also an Irish fiddle tune called ''The Cliffs of Moher.''
Transport
Bus Éireann route 350 links the Cliffs of Moher to several locations:
Ennis
Ennis ( , meaning 'island' or 'river meadow') is the county town of County Clare, in the mid-west of Ireland. The town lies on the River Fergus, north of where the river widens and enters the Shannon Estuary. Ennis is the largest town in Cou ...
,
Ennistymon
Ennistymon or Ennistimon () is a country market town in County Clare, near the west coast of Republic of Ireland, Ireland. The Inagh River, River Inagh, with its small rapids known as the Cascades, runs through the town, behind the main street. ...
,
Doolin,
Lisdoonvarna,
Kinvara
Kinvara or Kinvarra () is a sea port village in the southwest of County Galway, Ireland. It is located in the Civil parishes in Ireland, civil parish of Kinvarradoorus in the north of the Barony (Ireland), barony of Kiltartan. Kinvarra is also ...
and
Galway
Galway ( ; , ) is a City status in Ireland, city in (and the county town of) County Galway. It lies on the River Corrib between Lough Corrib and Galway Bay. It is the most populous settlement in the province of Connacht, the List of settleme ...
. This service includes a number of journeys each way daily. There is also a privately operated shuttle bus that serves the site from Doolin.
Gallery
File:Cliffs of Moher seen from water.jpg, Panorama perspective from sea level
File:Pano 4184 -1024-Cliffs of Moher.jpg, A wide perspective
File:MoherView1.jpg, A 200-metre drop
File:Moher11(js).jpg, Local feral Bilberry goats
File:Branaunmore-Moher-2012.JPG, ''Branaunmore'' sea stack
File:Cliffs of moher 33mp.jpg, Panorama from below O'Brien's Tower
File:MVIMG 20190706 154146.jpg, Cliffs of Moher seen from ferry
File:Cliffs of Moher, County Clare, Ireland.jpg, Cliffs of Moher, Ireland
See also
*
Wild Atlantic Way
The Wild Atlantic Way () is a Scenic route, tourism trail on the west coast, and on parts of the north and south coasts, of Ireland. The 2,500 km (1,553 mile) driving route passes through nine Counties of Ireland, counties and three Provinces ...
, an official tourism route, on which the cliffs form a "signature point"
*
Slieve League, another Irish mountain with sea-cliffs
*
Croaghaun, another Irish mountain with sea-cliffs
*
Surfing in Ireland
Surfing is a surface water sport in which an individual, a surfer (or two in tandem surfing), uses a board to ride on the forward section, or face, of a moving wave of water, which usually carries the surfer towards the shore. Waves suita ...
, Aileens is a world-renowned ''Big Wave''
*
List of tourist attractions in Ireland
References
External links
*
{{Authority control
Birdwatching sites in Ireland
Geography of County Clare
Tourist attractions in County Clare
Important Bird Areas of the Republic of Ireland
Moher
Protected areas of County Clare
Articles containing video clips