Allt y Benglog National Nature Reserve



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The little woodland of the Allt y Benglog NNR, on the side of the River Eiddon gorge on the lower slopes of Rhobell Fawr, is an unusual mix of plants and trees which spring from its volcanic rocks. Allt y Benglog is one of the smallest NNRs in Wales, but its permanently damp atmosphere, created through a combination of numerous waterfalls and tree cover, allows an unusually rich variety of moisture-loving mosses, plants and trees to thrive. Migrant breeding birds include pied flycatchers, wood warblers, tree pipits and redstarts. The drumming of the great spotted woodpecker can be heard from spring onwards, and along the river look out for dippers and grey wagtails. If you are really lucky you may catch a glimpse of a kingfisher on the larger River Wnion as it wends its way down to Dolgellau to join the Mawddach.

Allt y Benglog National Nature Reserve


About the area

Discover Gwynedd

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. The busiest part is around Snowdon; around 750,000 people climb, walk or ride the train to the summit each year.

Also in Gwynedd is the Llyn Peninsula, a remote part of Wales sticking 30 miles out into the Irish Sea. At the base of the peninsula is Porthmadog, a small town linked to Snowdonia by two steam railways – the Welsh Highland Railway and the Ffestiniog Railway. Other popular places are Criccieth, with a castle on its headland overlooking the beach, Pwllheli, and Abersoch and the St Tudwal Islands. Elsewhere, the peninsula is all about wildlife, tranquillity, and ancient sacred sites. Tre’r Ceiri hill fort is an Iron Age settlement set beside the coastal mountain of Yr Eifl, while Bardsey Island, at the tip of the peninsula, was the site of a fifth-century Celtic monastery.

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