How to Find Us

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.

Trigonos, Plas Baladeulyn
Nantlle, Caernarfon
Wales, LL54 6BW

Phone: +44 (0) 1286 882388
Email: [email protected]

Trigonos is situated in the village of Nantlle on the B4418, between Penygroes and Rhyd Ddu. Caernarfon is the nearest town and Bangor the nearest mainline railway station (West Coast mainline)

We offer some routes for travelling by road because experience of using satnavs is very varied. Often the satnav takes you on a longer and slower route than is necessary and on roads that can be clogged in high summer and difficult in the midst of winter.

From the North

Take the A55 toward Bangor/Holyhead. Ignore the first junction signposted to Bangor and leave at the following junction, signposted Caernarfon & Bangor. Follow signs for A487 to Caernarfon and then Porthmadog. About 5 miles beyond Caernarfon, at a roundabout, take the first exit, signposted Penygroes. In Penygroes, turn left at the crossroads, signposted to Nantlle. After 150 yards turn right at the T junction and continue for 1.5 miles. At the next T junction turn right to Nantlle/Beddgelert and carry on for 2 miles into the village of Nantlle. The entrance to Trigonos is on the right and well signposted.

From South & Mid-Wales

Follow the A470 through Dolgellau and then the A487 towards Caernarfon. About 5 miles before Caernarfon take the third exit at a roundabout, signposted Penygroes. After 200 yards, at the next roundabout, take the first exit. After quarter of a mile turn right at the crossroads just before a set of pedestrian lights (signposted to Nantlle). Continue as above.

From the Midlands and South of England

There are many possible routes, some more scenic than others.
M54 on to the A5. Follow to Bangor, then join the North route (A487 to Caernrafon) above M54 on to A5 up to Capel Curig. Left onto A4086 / A498 to Beddgelert. Then A4085 to Rhyd Ddu and left onto the B4418 to Nantlle. Drive through the first part of Nantlle and after 200 yards of open land, turn left into the Trigonos driveway.

Please note that this is a scenic but high level route and may be difficult in poor conditions.

For general information about travelling by public transport in Wales phone 0871 200 22 33 or see Traveline Wales.


Nearest mainline stations are Bangor (West Coast mainline) or if travelling from mid-Wales, Porthmadog. Information from National Rail enquiries on 08457 48 49 50 or From Bangor buses or a taxi to Trigonos (see below).
Coach: National Express coaches stop in Caernarfon from where you can get a taxi or local bus (see next section).


Unfortunately there is no longer a direct bus from Bangor to Nantlle, but there are buses from Bangor to Caernarfon. The 1N from Caernarfon serves Nantlle and connects with other buses running from Bangor, Caernarfon and Porthmadog. N.B. The 1A and 1C have different destinations. The 1A will take you as far as Penygroes before diverting and the 1c to Talysarn, about 2 miles from Nantlle. The bus stop in Nantlle is only a few steps from Trigonos.

For your return journey the 5A bus will take you back to Bangor station from Nantlle, but there is just one early morning bus. The Gwynedd Council website has all the bus timetables. There is also the T2 bus from Bangor-Aberystwyth which stops at Penygroes (2 miles from Trigonos, see taxi information below)

We recommend booking in advance with:

Ivan’s Taxis,

01286 881 590, [email protected]

For taxis to and from Bangor train station, Manchester and Liverpool airports they have an agreement with Trigonos to collect and deliver our guests at fixed rates:

Trigonos to or from Bangor Train Station
Car (3 People) = £48 each way
Minibus (8 People) = £65 each way

This service is not available from taxis at the station taxi rank. They may charge significantly more.

Ivan’s Taxis will pick you up from the front of the station (adjacent to platform 1) or the rear carpark (adjacent to platform 2) depending on your arrival platform. They cannot collect you from the usual taxi rank adjoining Platform 1. Please check pick-up location when you book with Ivan’s Taxis.

Taxis to and from airports are also bookable with Ivan’s at the following prices:

Trigonos to or from Manchester or Liverpool Airport
Car (3 People) = £145 each way
Minibus (8 People) = £190 each way
All other airport work is subject to quotations.

Ivan’s Taxis can cater for wheelchairs and mobility scooters. Please advise them at the time of booking.


Trigonos is an easy 3 mile cycle ride from route 8 (Lôn Eifion) on the Sustrans cycle network. This runs from Cardiff to Holyhead and is used to cycle from Bangor (nearest train station 19 miles) to Penygroes where you can join the B4418 to Nantlle

Nearest international airports – Manchester & Liverpool (two hours driving or train connections).

Caernarfon Castle
Snowdonia National Park (copyright Josh Kirk)
Dinas Dinlle beach (photo copyright Visit Snowdonia)

The Local Area

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


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.

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