Menhir de Kerloas


Megalith Route

Come and measure yourself against the highest menhir in the world! Iroise boasts 300 menhirs, dolmens and a cairn, all inherited from the Neolithic period, when the first farmers wanted to mark their territory and anchor their beliefs. Questions remain as to the function of these monuments, but legends fill in the mystery!

Allée couverte Guilliguy
Ludivine Méneur


Guilliguy covered walkway

On the heights of Portsall

Built over 5,000 years ago, this funerary monument housed collective burials. Its side entrance makes it a rare monument, andits location on the heights at the top of the Pointe du Guilliguy is certainly no coincidence! Excavations have revealed the presence of a microlith-cutting workshopas far back as the Mesolithic period (6,000 BC) .


Carn Island cairn


At low tide in Ploudalmézeau, you can travel back in time across the foreshore to 4,000 BC. The cairn on Carn Island is surprisingly well-preserved, despite the changing environment and rising sea levels that have separated it from the mainland. This funerary monument encloses three corridor dolmens with corbelled vaults. According to legend, it was here that a cruel horse-eared king lived! An exceptional place to discover.

Cairn Carn


However sturdy they may be, megaliths are fragile. Climbing on them can cause them to loosen. To preserve them as our ancestors imagined them, just admire them, touch them with your fingertips, and engrave these moments in your memory, not on the stone.

Dolmen Saint Gonvel


The Saint-Gonvel sand dolmen

Near the chapel

On the way to the Saint-Gonvel chapel, a small path on the left leads you to the Argenton dolmen, which stands out at the top of a cypress-lined mound. It is covered by a slab measuring 3.70 m by 2.30 m, and is partly covered by sand. You can sit beside it in silence, listening to the perpetual rolling of the waves.




The Île Melon dolmen

A precious witness to the past

Connected to the mainland at low tide, the small island of Melon will leave you with an unforgettable memory. Here you'll discover a large granite quarry, abandoned after years of hard work when Aber Ildut granite was highly prized. In the center of the island, the dolmen stands tall and sturdy among the wild flowers, despite the winds and tides.

Dolmen Melon
Menhirs of Kergadiou


The menhirs of Kergadiou

or the witch's menhirs

Legend has it that the standing menhir was stolen from a witch in Scotland. Enraged, she tried to knock it down by throwing a second menhir, but her throw proved too short by around 60 metres.


The Kerloas menhir

Europe's tallest menhir

Standing on the heights of the Pays d'Iroise, the Kerloas menhir measures 9m50, making it the tallest standing menhir in Europe! Made of Aber Ildut granite, it features cupules and bas-reliefs that once held a meaning. Until the 19th century, newlyweds would rub against the protuberances at the base of the menhir in the hope of a long and happy union.

Menhir de Kerloas


The Kereven menhir

A dismantled alignment

This orange-coloured quartz menhir is the last vestige of two alignments of standing stones that once led to Pointe Saint-Mathieu. Around 60 menhirs were counted by an archaeologist in 1912, before they were destroyed during the land consolidation project. The Kereven menhir, encircled by a tree that seems to want to protect it, is a survivor.

Menhir de Kereven

To find out more...

Megaliths of the Pays d'Iroise

Practical guide

Use this practical guide to organize your visit.