Cors Geirch National Nature Reserve

Cors Geirch National Nature Reserve is an extensive

wetland A wetland is a distinct semi-aquatic ecosystem whose groundcovers are flooded or saturated in water, either permanently, for years or decades, or only seasonally. Flooding results in oxygen-poor ( anoxic) processes taking place, especially ...

site on the

Llŷn Peninsula The Llŷn Peninsula ( or , ) is a peninsula in Gwynedd, Wales, with an area of about , and a population of at least 20,000. It extends into the Irish Sea, and its southern coast is the northern boundary of the Tremadog Bay inlet of Cardigan Ba ...

, in the central part of the valley that runs between

Nefyn Nefyn (, archaically anglicised as Nevin) is a town and community (Wales), community on the northwest coast of the Llŷn Peninsula, Gwynedd, Wales. Nefyn is popular with visitors for its sandy beach, and has one substantial hotel, a community pu ...

and

Pwllheli Pwllheli ( ; ) is a market town and community on the Llŷn Peninsula (), in Gwynedd, north-west Wales. It had a population of 4,076 in 2011, which declined slightly to 3,947 in 2021; a large proportion (81%) were Welsh language, Welsh speaking. ...

Wales Wales ( ) is a Countries of the United Kingdom, country that is part of the United Kingdom. It is bordered by the Irish Sea to the north and west, England to the England–Wales border, east, the Bristol Channel to the south, and the Celtic ...

. It is maintained by Natural Resources Wales. In spring, the

woodland A woodland () is, in the broad sense, land covered with woody plants (trees and shrubs), or in a narrow sense, synonymous with wood (or in the U.S., the '' plurale tantum'' woods), a low-density forest forming open habitats with plenty of sunli ...

on the slopes above the

bog A bog or bogland is a wetland that accumulates peat as a deposit of dead plant materials often mosses, typically sphagnum moss. It is one of the four main types of wetlands. Other names for bogs include mire, mosses, quagmire, and musk ...

is transformed by a spectacular cover of primroses,

wood anemone The phrase wood anemone is used in common names for several closely related species of flowering plants in genus ''Anemonoides'', including: * ''Anemonoides nemorosa'', the ''wood anemone'' in Europe and Asia * ''Anemonoides quinquefolia'', the ''w ...

and bluebells. The variety of insects found here includes the rare

marsh fritillary The marsh fritillary (''Euphydryas aurinia'') is a butterfly of the family Nymphalidae. Commonly distributed in the Palearctic region, the marsh fritillary's common name derives from one of its several habitats, marshland. The prolonged larval st ...

butterfly and many kinds of

dragonfly A dragonfly is a flying insect belonging to the infraorder Anisoptera below the order Odonata. About 3,000 extant species of dragonflies are known. Most are tropical, with fewer species in temperate regions. Loss of wetland habitat threat ...

and

damselfly Damselflies are flying insects of the suborder Zygoptera in the order Odonata. They are similar to dragonflies (which constitute the other odonatan suborder, Epiprocta) but are usually smaller and have slimmer bodies. Most species fold the win ...

. It is drained by the Afon Rhyd-hir which flows to the sea at Pwllheli. Buan, Gwynedd Forests and woodlands of Gwynedd Nature reserves in Gwynedd National nature reserves in Wales Llŷn Peninsula {{Gwynedd-geo-stub