Coed Ganllwyd National Nature Reserve

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Overview
A short walk through the Coed Ganllwyd NNR in the Coed-y-Brenin Forest leads to the spectacular 60ft-high Rhaeadr Ddu, or Black Falls, on the Afon Gamlan. The falls take their name from the slab of black rock over which the water cascades. Higher rainfall and continuous river spray, which is prevented from evaporating by the dense oak canopy, results in extreme humidity in the woodland. This wet climate makes Coed Ganllwyd the richest site for mosses and liverworts in Western Europe. Sessile oak, with occasional birch and ash, dominate the ancient woodland. Spring and summer mark the arrival of a host of migrant woodland birds such as wood warbler, nuthatch, jay, black cap and redstart as well as the distinctive pied flycatcher. Dippers may be spotted along the river. Insects include the uncommon brimstone butterfly, found on the nearby Dolmelynllyn estate. The wood is also an important area for bats, especially the rare lesser horseshoe.
Location
Ganllwyd
About the area
The county of Gwynedd is home to most of the Snowdonia National Park – including the wettest spot in Britain, an arête running up to Snowdon’s summit that receives an average annual rainfall of 4,473mm. With its mighty peaks, rivers and strong Welsh heritage (it has the highest proportion of Welsh-speakers in all of Wales), it’s always been an extremely popular place to visit and live.
Area image

Coed Ganllwyd National Nature Reserve

Recommended by Visit England Logo
Overview
A short walk through the Coed Ganllwyd NNR in the Coed-y-Brenin Forest leads to the spectacular 60ft-high Rhaeadr Ddu, or Black Falls, on the Afon Gamlan. The falls take their name from the slab of black rock over which the water cascades. Higher rainfall and continuous river spray, which is prevented from evaporating by the dense oak canopy, results in extreme humidity in the woodland. This wet climate makes Coed Ganllwyd the richest site for mosses and liverworts in Western Europe. Sessile oak, with occasional birch and ash, dominate the ancient woodland. Spring and summer mark the arrival of a host of migrant woodland birds such as wood warbler, nuthatch, jay, black cap and redstart as well as the distinctive pied flycatcher. Dippers may be spotted along the river. Insects include the uncommon brimstone butterfly, found on the nearby Dolmelynllyn estate. The wood is also an important area for bats, especially the rare lesser horseshoe.
Location
Ganllwyd
About the area
Area image
The county of Gwynedd is home to most of the Snowdonia National Park – including the wettest spot in Britain, an arête running up to Snowdon’s summit that receives an average annual rainfall of 4,473mm. With its mighty peaks, rivers and strong Welsh heritage (it has the highest proportion of Welsh-speakers in all of Wales), it’s always been an extremely popular place to visit and live.