Llyn Park is a lake

Lake

A lake is a body of relatively still fresh or salt water of considerable size, localized in a basin, that is surrounded by land. Lakes are inland and not part of the ocean and therefore are distinct from lagoons, and are larger and deeper than ponds. Lakes can be contrasted with rivers or streams,...

 in the Gwydir Forest

Gwydir Forest

Gwydir Forest, also spelled Gwydyr, is located in Conwy county borough and the Snowdonia National Park in North Wales. It takes its name from the ancient Gwydir Estate, established by the John Wynn family of Gwydir Castle, which owned this area....

 in North Wales

North Wales

North Wales is the northernmost unofficial region of Wales. It is bordered to the south by the counties of Ceredigion and Powys in Mid Wales and to the east by the counties of Shropshire in the West Midlands and Cheshire in North West England...

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Lying at a height of 664', it covers an area of 22 acres (89,030.9 m²), and is long and narrow in shape.

A natural lake, the building of a dam at the southern end raised the level to provide water to drive machinery at the nearby Aberllyn lead and zinc mine, which in 1900 employed some 200 men. The outflow of the lake today passes the ruined remains of the mills before joining the River Conwy

River Conwy

The River Conwy is a river in north Wales. From its source to its discharge in Conwy Bay it is a little over long. "Conwy" is sometimes Anglicized as "Conway."...

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To the west of the lake are the remains of a high wall, built by French Napoleonic

Napoleonic Wars

The Napoleonic Wars were a series of wars declared against Napoleon's French Empire by opposing coalitions that ran from 1803 to 1815. As a continuation of the wars sparked by the French Revolution of 1789, they revolutionised European armies and played out on an unprecedented scale, mainly due to...

 prisoners of war, to keep deer within the Gwydir High Park.

In 1938, when a large forest fire destroyed parts of the forest, it was hoped that Llyn Parc would act as a natural fire break. The fire, though, was so fierce that it crossed from one side to the other.

The high (though reducing) level of lead in the water means that there are no fish in the lake.

Some sources quote that the area around Llyn Parc is reported to be one of the few remaining strongholds of the red squirrel

Red Squirrel

The red squirrel or Eurasian red squirrel is a species of tree squirrel in the genus Sciurus common throughout Eurasia...

. This is not so, confusion having arisen between this location and the similarly named "Llyn Parc Mawr" at Newborough

Newborough, Anglesey

Newborough is a village in the south-western corner of the Isle of Anglesey in Wales; it is in the community of Rhosyr, which has a population of 2,169.-History:Newborough was a commotal centre of medieval Anglesey...

 on Anglesey

Anglesey

Anglesey , also known by its Welsh name Ynys Môn , is an island and, as Isle of Anglesey, a county off the north west coast of Wales...

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