Dinorwic quarry

Llyn Peris is a lake in Snowdonia, Wales, approximately 1.8 km long and situated close to the villages of Llanberis and Nant Peris, and the smaller twin of Llyn Padarn. The lake was formed glacially and is an example of a moraine-dammed lake. Llyn Peris is named after Saint Peris, an early Christian saint of whom little is known. The lake is flanked on one side by the mountain Elidir Fawr and the former slate quarry of Dinorwig. Above the opposite bank are the hills of Derlwyn and Clogwyn Mawr and a rock formation known as the Lady of Snowdon, due to its resemblance to a human face. The ruins of Dolbadarn Castle are also located on a mound above the lake. The lake now forms the lower reservoir of Dinorwig power station, and the administrative buildings for the station are situated on the lake shore. Water is released into the lake from Marchlyn Mawr (the upper reservoir) to produce electricity during periods of peak demand. This water is, in turn, pumped back to the upper reservoir using electricity purchased at off-peak periods. The water level of the lake therefore varies considerably, depending on UK electricity demand. Excess water from the lake drains into Llyn Padarn. During construction of the power station, when the capacity of the lake was increased considerably at this time, with the removal of a large quantity of slate waste, rare Welsh Arctic char fish were removed to four other lakes in the neighbouring Carneddau mountains, namely Ffynnon Llugwy, Llyn Cowlyd, Llyn Melynllyn and Llyn Dulyn, where they are still to be found. Although Llyn Peris itself was not restocked, some char have found their way back to the lake. Parts of the lake shore are designated as a Site of Special Scientific Interest for Glacial Geology.

Gilfach Ddu (LLR) railway station is an intermediate station on the Llanberis Lake Railway (LLR), located in Llanberis, Gwynedd, Wales. Most of the LLR was laid around 1970 on part of the trackbed of the closed and lifted Padarn Railway. The line opened between Gilfach Ddu and Cei Llydan on 28 May 1971, being extended northwards to Penllyn (LLR) in 1972. For thirty years Gilfach Ddu was the new line's southern terminus, situated a short distance south of the site of the Padarn Railway's former workmen's station, also named Gilfach Ddu. In 2003 a wholly new extension was opened south westwards, with Llanberis (LLR) station as the line's new southern terminus. With this extension Gilfach Ddu (LLR) changed from a terminus to a through station. The line and station primarily serve tourists and railway enthusiasts.The station has one platform.

The Dinorwig Power Station (; Welsh: [dɪˈnɔrwɪɡ]), known locally as Electric Mountain, or Mynydd Gwefru, is a pumped-storage hydroelectric scheme, near Dinorwig, Llanberis in Snowdonia national park in Gwynedd, north Wales. The scheme can supply a maximum power of 1,728 MW (2,317,000 hp) and has a storage capacity of around 9.1 GWh (33 TJ).

The National Slate Museum (previously known as the Welsh Slate Museum and the North Wales Quarrying Museum) is located at Gilfach Ddu, the 19th-century workshops of the now disused Dinorwic quarry, within the Padarn Country Park, Llanberis, Gwynedd. The museum is dedicated to the preservation and display of relicts of the Slate industry in Wales. The museum is an anchor point of the European Route of Industrial Heritage (ERIH) and part of Amgueddfa Cymru – National Museum Wales.

Gilfach Ddu (also known as the Dinorwic Slate Quarry Workshops) are a series of well preserved Grade I listed industrial buildings built to serve the Dinorwic slate quarry near the Llanberis in Caernarfonshire, North Wales. The workshops are a complex of repair and maintenance buildings, that were built in 1870 to build and maintain the machinery used in the quarry. The complex includes saw sheds, patternmaking shops, a foundry with copula, blacksmiths shops, fitting shops, stores, engine sheds, a canteen, the chief engineers house, a hand operated crane and two waterwheels which provided the site with its power. Since 1972 the buildings have housed the National Slate Museum.

Dinorwig, sometimes spelled Dinorwic ( din-OR-wig; ; Welsh: [dɪˈnɔrwɪɡ]), is a village located high above Llyn Padarn, near Llanberis, in Wales. The name is shared with the fort of Dinas Dinorwig, also within the community of Llanddeiniolen, on a foothill 6 kilometres (3.7 mi) from Dinorwig village and 3 kilometres (1.9 mi) from the Menai Strait and also with Port Dinorwic, the anglicised name of Y Felinheli.

Dolbadarn Castle (English: dol-BAD-an; Welsh: Castell Dolbadarn Welsh pronunciation: [kastɛɬ dɔl'badaːn]) is a fortification built by the Welsh prince Llywelyn the Great during the early 13th century, at the base of the Llanberis Pass, in northern Wales. The castle was important both militarily and as a symbol of Llywelyn's power and authority. The castle features a large stone keep, which historian Richard Avent considers "the finest surviving example of a Welsh round tower". In 1284 Dolbadarn was taken by Edward I, who removed some of its timbers to build his new castle at Caernarfon. The castle was used as a manor house for some years, before falling into ruin. In the 18th and 19th centuries, it was a popular destination for painters interested in Sublime and Picturesque landscapes. It is now owned by Cadw and managed as a tourist attraction, and is protected as a grade I listed building.

Elidir Fawr is a mountain in Snowdonia, north Wales, the northernmost peak in the Glyderau. Its name means 'Big Elidir', named after a legendary warrior king of the 6th century also known as Eliffer Gosgorddfawr (Elidir of the Great Army).To the north of the summit is a small lake, Marchlyn Mawr, which is the upper reservoir for Dinorwig power station, a pump-storage power station hidden inside the mountain. Water from this lake flows through huge tunnels into the lower reservoir Llyn Peris. From the north, Elidir Fawr is very prominent, and can appear to be higher than the higher mountains behind it.

Llanberis (LLR) railway station is the southern terminus of the Llanberis Lake Railway (LLR), located in Llanberis, Gwynedd, Wales. The line and station primarily serve tourists and railway enthusiasts.Most of the LLR was laid around 1970 on the trackbed of the closed and lifted Padarn Railway. The line opened between Gilfach Ddu (LLR) and Cei Llydan on 28 May 1971, being extended northwards to Penllyn (LLR) in 1972. For thirty years the new line's southern terminus was Gilfach Ddu (LLR), situated a short distance south of the site of the Padarn Railway's former workmen's station, also named Gilfach Ddu. In 2003 a wholly new extension was opened south westwards, with Llanberis (LLR) station as the line's new southern terminus. The single platform station stands opposite Llanberis (SMR) station, the lower terminus of the Snowdon Mountain Railway, and not far from the site of the long-closed Llanberis standard gauge station.

Llanberis (SMR) railway station is the lower terminus of the Snowdon Mountain Railway, located in Llanberis, Gwynedd, Wales. The station houses the headquarters of the tourist railway which climbs for 4.7 miles (7.6 km) from Llanberis to the summit of Snowdon, the highest peak in Wales. The station stands in the valley bottom at an altitude of (353 ft (108 m)), the summit station stands at 3,493 feet (1,065 m), 68 feet (21 metres) below the summit of the mountain. The station opened with the railway on 6 April 1896, but closed the same day following an accident. It reopened on 9 April 1897, without mishap and has operated since, even throughout most of the Second World War, as there was military activity near the mountaintop.The station has two platforms. The first stretch of line is uphill at 1 in 50, steep for a main line but shallow compared with the 1 in 6 incline that begins shortly afterwards. The line's engine shed and workshop are visible from the platform ends.

Llanberis railway station was located in Llanberis, Gwynedd, Wales. It was a short walk from the Llanberis station of the Snowdon Mountain Railway. It opened 1 July 1869, and closed for regular passenger services in 1930. But it was still used by summer excursion trains until 7 September 1962 and freight services until 3 September 1964.The last fare-paying passenger service was an enthusiasts' special on 20 October 1964.An engine shed stood between the goods yard and the 42' turntable beyond the end of the platform. From 1948 to 1962 some excursion trains used an observation car which was turned round on the turntable so occupants always had an open view. The shed closed around 1915 and had been demolished by 1919. The goods yard was the last part of the working railway to close. The station had a ticket platform at its northern end. A LMS caravan was sited opposite from 1934 to 1939. A camping coach was also positioned here by the London Midland Region from 1954 to 1959 (two coaches in 1954 only).The line was lifted in 1965. The station site and most of the trackbed as far as Cwm-y-Glo are now occupied by the improved A4086, which bypasses the centre of Llanberis. In 2015 the original station building was in use as a craft shop.

The Paddy Buckley Round, also known as the Welsh Classical Round, is a long distance fell running challenge in Snowdonia, Wales. The route is a circuit of just over 100 km long taking in some 47 summits. The Round has the reputation of being somewhat tougher to complete than its English Lake District equivalent, the Bob Graham Round. Although no official time limit is set, an arbitrary 24 hours is applied, although the first completer exceeded the original aim of 24 hours. Runners may start at any point on the circular route (finishing at the same place) and may run the course in either a clockwise or anticlockwise direction. The route takes in the well-known high mountain ranges of Snowdon, the Glyderau and the Carneddau as well as the slightly less visited ranges of Moel Siabod, the Moelwynion, Moel Hebog and the Nantlle Ridge. The route was devised by the eponymous Paddy Buckley and first completed in 1982 by Wendy Dodds. The selection of summits that must be visited is somewhat arbitrary and no rules appear to have been applied in selecting them. Generally, it takes in the major peaks of the ranges that are being crossed, then any minor tops that are passed along the way are also included. Some of these tops really are just bumps on the ridge and not really summits in their own right at all. The fastest known completion of the round was, for many years, by Mark Hartell in 18 hours 10 minutes. On 4 May 2008, this time was matched by Chris Near of Eryri Harriers. This old record was broken in July 2009 by Tim Higginbottom who completed the Round in a time of 17 hours and 42 minutes. This was further reduced in 2019 by Damian Hall with 17 hours 31 minutes, and again on 30 August 2020 by Matthew Roberts with a time of 16 hours 38 minutes. Kim Collison set a new best time of 16 hours 20 minutes in April 2021. A year later, in April 2022, a new record was set by Finlay Wild who completed the round solo and unsupported in a time of 15 hours 14 minutes.The women's record is held by Jasmin Paris with a time of 18 hours and 33 minutes, set in 2016.The book "The Welsh Three Thousand Foot Challenges: A Guide for Walkers and Hill Runners" describes a version of the route which avoids the slate quarries, which the fastest line utilises, and also suggests attempting it as a four-day backpacking (lightweight camping) excursion rather than a one-day run.