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Trefor Granite Quarry

Quarry

Terrain:

Activities

Best Time To Visit

Coastal, Caves, Cliffs

Walking, Swimming, Wildlife Watching, Fishing, Birdwatching

Spring to Autumn

Photo: Bill Harrison via Geograph.org.uk

Above the village of Trefor on the north coast of the Llyn, a large disused granite quarry is cut into the slopes of Yr Eifl, the three peaks that rise steeply from the shore. Known locally as Y Gwaith Mawr, 'the Big Works', it opened in 1850 and the village itself grew up to house the quarrymen. Wh...

3

Parking nearby

0

Food Spots nearby

3

Staycations nearby

Parking:

Food:

Staycations:

3 day parking

The Cosy Cabin, Yr Eifl Glamping Pod, Away From it All Glamping Domes

Nearest Hidden Gem 1

Nearest Hidden Gem 2

Nearest Hidden Gem 3

FAQ's/Things to Know

Where is Trefor Granite Quarry?
North West Wales holds this dramatic industrial site right on the coastal edge of the Llŷn Peninsula. Walkers can look out for the massive terraced amphitheatre cut directly into the northern slopes of Yr Eifl mountain.

What type of place is Trefor Granite Quarry?
Trefor Granite Quarry is a disused granite quarry on the Llŷn Peninsula in North Wales.

When is the best time to visit Trefor Granite Quarry?
Spring through to autumn offers the most reliable weather conditions for climbing the steep coastal inclines. Clear seasonal days also provide the sharpest visibility across the grey marine horizon.

What can you do at Trefor Granite Quarry?
Explorers enjoy scrambling over tons of weathered rubble and investigating the cavernous, roofless shells of forgotten stone crushing mills. Anyone visiting can also wander through the dark, cold tunnels where laborers once loaded raw materials onto vessels.

How long should I spend at Trefor Granite Quarry?
Allowing roughly two hours provides ample time to safely navigate the vast landscape and take photos of the skeletal brick remains. Serious industrial history enthusiasts might want to stretch their stay to explore the higher terraces.

Where do I park at Trefor Granite Quarry?
Vehicles can use three day parking spaces near the site. Full details are available on the UK Hidden Gems app.

Where can I eat near Trefor Granite Quarry?
There are no food spots recorded immediately near Trefor Granite Quarry, check the UK Hidden Gems app for the nearest options.

Where can I stay near Trefor Granite Quarry?
The Cosy Cabin, Yr Eifl Glamping Pod, and Away From it All Glamping Domes provide three staycation spots in the area. Full details are available on the UK Hidden Gems app.

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Last Updated:

02 July 2026

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