Llyn Geirionydd
| Llyn Geirionydd | |
|---|---|
 |
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| Location | Snowdonia, North Wales |
| Coordinates | 53°7′53″N 3°50′57″W / 53.13139°N 3.84917°WCoordinates: 53°7′53″N 3°50′57″W / 53.13139°N 3.84917°W |
| Type | natural |
| Primary outflows | Afon Geirionydd |
| Basin countries | United Kingdom |
| Surface area | 45 acres (18 ha) |
| Max. depth | 50 ft (15 m) |
Llyn Geirionydd lies in a valley in North Wales where the northern edge of the Gwydyr Forest meets the lower slopes of the Carneddau mountains. The lake is almost a mile long and covers an area of 45 acres (180,000 m2), but is never any deeper than 50 ft (15 m) according to Jehu’s survey. The lake can be reached by car from Trefriw or Llanrwst in the Conwy valley, the lane passing through the hamlet of Llanrhychwyn, or from the road through the Gwydir Forest. Access is not particularly easy by either route, but this has not stopped the lake being the only one designated in Snowdonia to permit power boats and water skiing. Many visitors also walk to the lake from the village of Trefriw (it is on one of the Trefriw Trail routes) or from the neighbouring lake of Llyn Crafnant, which runs parallel to it, but a mile distant, the two being separated by Mynydd Deulyn, “mountain of the two lakes”.
The lake has a car park (with toilets) and the location is very popular in the summer. This car park site was once a waste tip site for the Pandora mine above, and indeed the planting of conifers in the area of the lake has considerably softened the effects of mining. There are few, if any, fish in the lake, and this, it is believed, is the result of the poisoning of the waters from the adjacent metal mines.
Afon Geirionydd, the outflow of Llyn Geirionydd, flows down a steep gorge—Geirionydd Gorge—which is popular for gorge walking. At the bottom of this gorge are the remains of Klondyke mill, which was powered by water from the river. This mill, apart from processing its own metals (which did not amount to much), also received lead and zinc ore from the Pandora mine, and the route of the tramway from that mine ran partly along the route of the lakeside road (which did not exist at the time), and can be clearly seen running between the road and the lake along the northern half of the lake where the road rises somewhat. This tramway continues to a point above Klondyke mill, from where wagons entered the mine via an aerial ropeway. This last part of the tramway is a right of way which runs above the valley, eventually reaching Trefriw. Below Klondyke Mill Afon Geirionydd joins Afon Crafnant, the outflow from neighbouring Llyn Crafnant, which itself is a tributary of the River Conwy.
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Wikipedia