Landscape Experience

An ancient mountain range with rocks dating from at least 650 million years ago, the Sperrins have been home to people for millennia.

The Sperrins: where astronomy meets archaeology.

From 10,000BC when the first, hunter-gatherer settlers of Ireland came to this land, to our ancestors who populated these hills in the bronze age, to the present day community who live and work in the valley of the Broughderg River, these peoples have left traces of their presence on the landscape we see today.

Tantalising glimpses of their culture, creativity and belief systems are revealed in a rich archaeological heritage.  The Sperrin mountains, and in particular Davagh Forest, have a plethora of surviving ‘megalithic’ monuments: ancient field systems, standing stones, stone circles and burial tombs.

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Beaghmore Stone Circles

Nestled amongst the green grass and heather clad moorland sit 7 mystical circles, 10 rows of stones and 12 cairns, carefully arranged.

Beaghmore (Bheitheach Mhór), meaning ‘big place of birch trees’ was once a dense woodland before being cleared by Neolithic farmers.


The circles and alignments were discovered in the late 1930s during peat cutting when 1,269 stones were uncovered. The site and the surrounding bog indicate that the area was occupied from Neolithic times through the Bronze Age.

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Home to our Neolithic Ancestors

Hearths and deposits of flint tools have been carbon dated to 2900-2600BC. Several of the stone rows run over the tumbled walls of field structures which also date from Neolithic times.


Look closely at some of the stones and what may seem as ancient chisel marks bear a resemblance to our oldest known Celtic writing. Ogham, a secret and sacred writing, was a system of symbols used for magic and divination.

The circles and alignments, however, remain a mystery.  No-one really knows why this intriguing cluster of stones was created.

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It must somehow involve the sky?

Some archaeologists believe that the circles have been constructed in relation to the midsummer sunrise, or to record the movements of the sun and moon acting as markers in a calendar to identify certain lunar, solar or stellar events.

Three of the stone rows point to sunrise at the solstice and another appears to be aligned towards a lunar maximum.


The stones speak to ancient rituals and to a people who understood astronomy.  When you visit this ancient site look up in wonder at the sky and reflect, that the people that built the monuments observed the same sky, sun, moon and stars.

Could this have been the first observatory in Davagh Forest?

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More to come in 2021

From the first Observatory at Davagh to the latest: A Solar Walk

In 2021, visitors to Davagh Forest will be able to walk from what we believe may have been the first observatory here – at Beaghmore Stone Circles – to the modern-day building, OM.

OM Dark Sky Park and Observatory

Delve into OM Dark Sky

Book a tour of the Exhibition

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