Snowdonia National ParkTrigonos-Aerial
Trigonos is situated in Dyffryn Nantlle (the Nantlle Valley) in the Snowdonia National Park, halfway between the coast and Snowdon, the highest mountain in Wales and England

Mountains and Walks
An area of beauty and grandeur, the Nantlle valley offers a range of walks for all levels of experience. From challenging mountain climbs to easier woodland or lakeside paths, the peace and beauty of the area is unsurpassed



Coast The closest beach to Trigonos is at Dinas Dinlle, just 8 miles away and there are countless other fine beaches along the beautiful Llyn peninsula

Many of our visitors bring their own bikes to explore the area, or bikes can be hired locally at Beics Menai Bikes or Beddgelert Bikes for those interested in mountain biking or exploring forest trails. There is also a very popular cycle path to Caernarfon, Porthmadog and beyond

Narrow Gauge Railways
North Wales is the place for railway enthusiasts with both the  Welsh Highland Railway route running from Caernarfon, through Rhyd Ddu, Beddgelert and onto Porthmadog. From Portmadog  the Ffestiniog Railway runs to the slate town of Blaenau Ffestiniog. The Snowdon Mountain Railway runs from Llanberis to the summit

Nearby Caernarfon Castle (10 miles way) is arguably the most impressive of Edward I’s fortified castles. Further fine examples can all be found within an hour’s drive at Conwy, Beaumaris and Harlech. The only Welsh built castle in the area is in Cricieth, an attractive seaside town

The locality is rich in historical sites from the iron age hill forts in Dinas Dinlle and Tre’r Ceiri to the standing stones at Penmaenmawr and burial chambers on Anglesey

Snowdonia is the home of Arthurian legend and the Nantlle valley is the site of one of the tales in the Mabinogi, recognised as one of the oldest collections of British Celtic myths.

We have long been interested in local weather patterns and have a small  automatic weather station in the orchard. It records temperature, humidity, rainfall, wind direction & speed and air pressure. This information is on the Trigonos weather website. There are also links to other useful weather websites

We are building an on-going record of local weather patterns. We also upload the data onto the web that will also give you today’s weather and forecast

Our data is submitted to the Met Office where it can be viewed on their Weather Observations Website WOW along with hundreds of other small weather stations

If you are going walking in the mountains we strongly advise you check the Met Office mountain weather forecast for the Snowdonia National Park area as a whole
You should also check the forecast for individual mountain peaks and ridges if you are going high



Transparency has always been one of Trigonos’s essential values and that includes how we deal with your personal data. We therefore welcome the provisions of the General Data Protection Regulation (GDPR) which came into force in May 2018.


GDPR applies to every EU based organisation that processes personal data. The regulation ensures that you know how organisations deal with your data and protect it from wrong use. The law states that your personal data belongs to you and the GDPR sets out clear rules on how organisations should collect, use and store your personal data


Trigonos has produced a privacy statement that aims to be as fair and transparent as possible and is in line with the GDPR. The privacy statement is set out here.


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