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image for Nature Reserve item typeNant Irfon Nature Reserveadd to shortlist

Nature Reserve, free entry

Llanwrtyd Wells,


Nant Irfon lies high in the Cambrian Mountains on steep valley slopes near the source of the river Irfon, which joins the Wye further downstream. The valley owes its shape partly to river erosion and partly to past movements of ice. It is a typical example of upland habitats in this part of the country. The oak woodland, a remnant of the ancient forest which used to cover much more of Wales, together with the frequent rock exposures on the open hill, support a wide range of important lichens and mosses. The Reserve is a small part of the extensive Elenydd SSSI and the Elan Valley Woodlands SAC.

There is open access throughout the Reserve but there are no maintained paths. Extensive walking is possible although the terrain is generally rugged.There are steep and slippery slopes, deep pools and swiftly flowing streams.

Open all the time


Free entry


Llanwrtyd Wells,

Location and nearby places


Plan route to Nant Irfon Nature Reserve using Google mapsPlan route using Google maps

Map reference: SN 860531  Lat: 52.16473 Long: -3.66699

The Reserve is situated along the south-western flank of the Irfon river about 4 miles north of Llanwrtyd Wells (which is on the A483) and just upstream from the hamlet of Abergwesyn. A track beside the river Irfon starts 200 yards south-west of the T-junction in Abergwesyn and leads by a rough path to the southern Reserve entrance after about 500 yards. 2.5 miles further on from the T-junction going towards Tregaron, just before a conifer plantation, the Reserve can be entered through a narrow gate set back 30 yards from the road.

Accessible by Public Transport: 5 miles from Llanwrtyd station

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