Cors Geirch National Nature Reserve

National Nature Reserve

For details of National nature reserves in the United Kingdom see:*National Nature Reserves in England*National Nature Reserves in Northern Ireland*National Nature Reserves in Scotland*National Nature Reserves in Wales...

is an extensive wetland

Wetland

A wetland is an area of land whose soil is saturated with water either permanently or seasonally. Wetlands are categorised by their characteristic vegetation, which is adapted to these unique soil conditions....

 site situated on the Llŷn Peninsula

Llŷn Peninsula

The Llŷn Peninsula extends into the Irish Sea from north west Wales, south west of the Isle of Anglesey. It is part of the modern county and historic region of Gwynedd. The name is thought to be of Irish origin, and to have the same root Laigin in Irish as the word Leinster...

, in the central part of the valley that runs between Nefyn

Nefyn

Nefyn is a small town and community on the north west coast of the Llŷn Peninsula in Gwynedd, Wales, with a population of 2,619. Welsh is the first language of almost 80% of its inhabitants. The A497 road terminates in the town centre.-History:...

 and Pwllheli

Pwllheli

Pwllheli is a community and the main market town of the Llŷn Peninsula in Gwynedd, north-western Wales. It has a population of 3,861, of which a large proportion, 81 per cent, are Welsh speaking. Pwllheli is the place where Plaid Cymru was founded. It is the birthplace of Albert Evans-Jones -...

 in Wales

Wales

Wales is a country that is part of the United Kingdom and the island of Great Britain, bordered by England to its east and the Atlantic Ocean and Irish Sea to its west. It has a population of three million, and a total area of 20,779 km²...

. It is maintained by the Countryside Council for Wales.

In spring, the woodland

Woodland

Ecologically, a woodland is a low-density forest forming open habitats with plenty of sunlight and limited shade. Woodlands may support an understory of shrubs and herbaceous plants including grasses. Woodland may form a transition to shrubland under drier conditions or during early stages of...

 on the slopes above the bog

Bog

A bog, quagmire or mire is a wetland that accumulates acidic peat, a deposit of dead plant material—often mosses or, in Arctic climates, lichens....

 is transformed by a spectacular cover of primroses

Primula vulgaris

Primula vulgaris is a species of Primula native to western and southern Europe , northwest Africa , and southwest Asia...

, wood anemone

Anemone nemorosa

Anemone nemorosa is an early-spring flowering plant in the genus Anemone in the family Ranunculaceae, native to Europe. Common names include wood anemone, windflower, thimbleweed and smell fox, an allusion to the musky smell of the leaves...

 and bluebell

Common Bluebell

Hyacinthoides non-scripta, commonly known as the common bluebell, is a spring-flowering bulbous perennial plant. -Taxonomy:...

s. The huge variety of insects found here includes the rare marsh fritillary butterfly

Marsh Fritillary

The Marsh Fritillary, Euphydryas aurinia, is a butterfly of the Nymphalidae family.It is widespread in the Palaearctic region from Ireland in the West to Yakutia in the East, and to North-west China and Mongolia in the South.E. aurinia is represented by many subspecies.The most widely accepted...

 and many kinds of dragonfly

Dragonfly

A dragonfly is a winged insect belonging to the order Odonata, the suborder Epiprocta or, in the strict sense, the infraorder Anisoptera . It is characterized by large multifaceted eyes, two pairs of strong transparent wings, and an elongated body...

 and damselfly

Damselfly

Damselflies are insects in the order Odonata. Damselflies are similar to dragonflies, but the adults can be distinguished by the fact that the wings of most damselflies are held along, and parallel to, the body when at rest...

.