The Cors Geirch NNR on the Llyn Peninsula is a wetland reserve of international importance, home to many nationally-rare plants and species such as the small red and blue-tailed damselflies and the marsh fritillary butterfly. Much of the interest in the Cors Geirch area is the environmental significance of its alkaline fen and its vegetation. The rich fen is rare in the UK and the alkaline water draining into the basin from porous limestone rocks results in an unusual and rare combination of plants including narrow-leaved marsh orchid, black bog rush, marsh fern, bog myrtle, purple moor grass, blunt-flowered rush, common reed, great fen sedge and slender cotton grass. In spring, the woodland on the slopes above the bog is transformed by a spectacular cover of primroses, wood anemones and bluebells. The marsh is also one of the only places in Wales known to support Desmoulin’s whorl snail.
Also in the Area
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. 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.
Places to Stay
Restaurants and Pubs
Why Choose Rated Trips
Your trusted guide to rated places across the UK
The Best Coverage
Discover more than 15,000 professionally rated places to stay, eat and visit from across the UK and Ireland.
Choose a place to stay safe in the knowledge that it has been expertly assessed by trained assessors.
Plan Your Next Trip
Search by location or the type of place you're visiting to find your next ideal holiday experience.
Read our articles, city guides and recommended things to do for inspiration. We're here to help you explore the UK.