image for Valley item typeDyfi Valley & Coast

Dyfi Biosphere

Dyfi Biosphere

Dyfi Biosphere

Valley, free entry

UN Biosphere Reserve


Mid Wales,
SY20 8SR

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The Dyfi Valley opens wide as it approaches the Cardigan Bay Coast and ends in sandy beaches and dunes. It cradles the westerly spur of Powys, Ceredigion north of Aberystwyth, and the southern rim of Snowdonia National Park.

The area around the river Dyfi is a special place to live, work and to visit - special for its people, its culture and its outstanding environment. It hosts some of the finest examples of special landscapes and wildlife areas in Europe with much of the estuary area recognised as a UNESCO Biosphere Reserve.

Welsh is the first language for many in the Dyfi Valley and you’ll often hear it spoken – with a friendly switch to English when necessary. Signs and posters are usually bilingual, or English only. The place names in Wales often describe the landscape. For example, the town of Aberdyfi - Aber means ‘river mouth’, Dyfi is the name of the river that flows through the valley.

Scenic highlights in the Dyfi Valley include:

The beautiful Aran mountains at the head of the valley accessible from Dinas Mawddwy
Cadair Idris in Southern Snowdonia is easily accessible from the valley
Ynyslas dunes and Cors Fochno National Nature Reserve are situated to the south of the mouth of the Dyfi, next to Borth

Award-winning beaches run along either edge of the estuary, from Aberdyfi to Tywyn in the north and from Ynyslas to Borth in the south

The Pennant valley, with its steep wooded slopes above Llanbrynmair, is a striking example of a captured river.

Open all the time


Free entry



Plan route to Dyfi Valley and Coast using Google mapsPlan route using Google maps

Map reference: SH 746006  Lat: 52.58870 Long: -3.85247

By Train: Cambrian LIne Stations at Machynlleth, Aberystwyth and Aberdyfi
Cycle Route: the north-south national cycle Route 8 passes through the area

Accessible by Public Transport: 0 miles from Machynlleth station

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