Tryfan

Dyffryn Ogwen, or Ogwen Valley, is a valley mostly located in the Welsh county of Gwynedd. The upper section of the valley, east of Llyn Ogwen, lies in the county of Conwy.

Llyn Ogwen (; Welsh: [ˈɬɪn ˈɔɡʊɛn]) is a ribbon lake in north-west Wales. It lies alongside the A5 road between two mountain ranges of Snowdonia, the Carneddau and the Glyderau. Somewhat unusually, the county boundary at this point is drawn so that the lake itself lies in the county of Gwynedd, but all the surrounding land (excluding the outflow) lies in Conwy County Borough. Llyn Ogwen lies at a height of about 310 metres above sea level and has an area of 78 acres (320,000 m2), but is a very shallow lake, with a maximum depth of only a little over 3 metres. It is fed by a number of streams from the slopes of the mountains which surround it, which include Tryfan and Pen yr Ole Wen. The largest of these streams is Afon Lloer, which flows from Ffynnon Lloer. It is said that after the Battle of Camlann (King Arthur's final battle), Sir Bedivere (Bedwyr) cast the sword Excalibur into Llyn Ogwen, where it was caught by the Lady of the Lake. Tryfan is said to be Sir Bedivere's final resting-place. According to the writer Jonah Jones:"J. M. Archer Thomson, a headmaster of Llandudno School and a pioneer rock climber in Snowdonia quotes a strange legend from a Welsh magazine concerning Llyn Ogwen. A Shepherd happened upon a cave in Craig Cwrwgl above the lake containing the treasure of King Arthur. In the midst of the commotion caused by this intrusion, he turned to the lake, and 'behold thereon a coracle in which sat three women of more than mortal beauty, but the dread aspect of the rower would have filled the stoutest heart with terror.' E. W. Steeple, who recorded this legend, suggests it 'seems a little obscure, and it may be that it has become involved with another story', probably that of Llyn Llydaw." Llyn Ogwen is the source of the Afon Ogwen which flows north to reach the sea near Bangor. A dam was built in the Afon Ogwen at Ogwen Bank, in the early 20th century, to raise the level of the river in order to provide water for the use in the nearby Penrhyn Quarry. The lake is popular with anglers and is said to contain excellent trout.

Afon Lloer is a small river in Snowdonia in north-west Wales. It is the outflow from Ffynnon Lloer, a lake in the Carneddau mountains, and it flows into Llyn Ogwen.

Llyn Bochlwyd (Welsh pronunciation: [ɬɨ̞n boːχluːɨ̯d, ɬɪn boːχlʊi̯d]) is a lake in Snowdonia, Wales, in Conwy County Borough. It lies in Cwm Bochlwyd, near Llyn Ogwen in the Glyderau mountain range.

Glyder Fach is a mountain in Snowdonia, north-west Wales, and is the second highest of the Glyderau and the sixth highest in Wales. Routes to the summit lead from Tryfan and Bristly Ridge to the north, via Glyder Fawr from Pen-y-Pass to the south, and along the Glyder ridge to the east, towards Capel Curig. It is a popular spot for climbers. According to Sir Ifor Williams, the word "Glyder" derives from the Welsh word "Gludair", meaning a heap of stones. Situated near the summit is Y Gwyliwr, a large rock which from the correct angle appears to be precariously balanced, making it a popular place for photographs. (The name means 'The Sentinel', but is usually anglicised as The Cantilever.) Another notable feature, west of the summit, is Castell y Gwynt, a spiky rocky outcrop.

Castell y Gwynt is a top of Glyder Fach in Snowdonia, north-west Wales. It has the merit of being the only 3000 ft Welsh summit classed as only a Nuttall, hence it is not included in the Welsh 3000s. It has a prominence of 15.7 m (51.5 ft), and was only included on the Nuttall's list after re-surveying in 2007. The top is more famous as a feature than a summit. "Castell y Gwynt" and the "Cantilever Stone" featured in Walt Disney's Dragonslayer.

Y Foel Goch is a mountain in Snowdonia, north-west Wales, and is a sister peak along with Gallt yr Ogof to Glyder Fach. Between Glyder Fach and its summit lies Llyn Caseg-fraith, a popular lake for photographing Tryfan and its reflection. The summit is grassy with a few small rock outcrops and is marked with a small cairn. The views are limited to the bulky neighbours of Moel Siabod, Tryfan and Glyder Fach. The ridge continues eastwards to Gallt yr Ogof.

Ogwen Cottage Outdoor Pursuits Centre is situated beside Llyn Ogwen, in Gwynedd, Wales. It is owned by the National Trust, who bought the property at auction in October 2014 for £450,000. It was formerly for many years part of Birmingham City Council's Outdoor Learning Service, providing outdoor education, and with links to the climbing community.

Ffynnon Lloer (Welsh : Source of [the] Moon) is a lake in the Carneddau range of mountains in Snowdonia, North Wales. It lies below the peaks of Pen yr Ole Wen and Carnedd Dafydd at a height of 2,225 feet (678 m) and covers an area of some 6 acres (2.43 ha). The remains of two wartime aircraft, which crashed in 1942 and 1943, lie on the slopes round the lake.Afon Lloer, its outflow, flows into Llyn Ogwen.

The Nant Ffrancon Pass in Snowdonia, North Wales is at 312 metres (1,024 ft) at Pont Wern-gof, about one-third of a mile beyond the eastern end of Llyn Ogwen. The A5 road crosses it between Llyn Ogwen and Bethesda, Gwynedd

Pen yr Ole Wen is the seventh highest mountain in Snowdonia and in Wales. It is the most southerly of the Carneddau range. The mountain lies to the north of Idwal Cottage youth hostel on the A5 road, from where it has a pyramidal appearance. It may be climbed from the hostel by a path that leads directly up the south west "corner", climbing 675 m in about 1.5 km (i.e. an average gradient of nearly 1 in 2). A slightly easier ascent involves starting from Tal-y-Llyn Ogwen, about a mile north-east from the hostel, following the stream until nearing the outflow from the mountain lake Ffynnon Lloer and then branching left to take the path up the ridge. For many years the mountain's name was translated as "Head of the White Light", the interpretation of which was a mystery. However in 2004 Professor Hywel Wyn Owen at the Place-Name Research Centre at Bangor University in Bangor, Gwynedd resolved the matter saying that Ole comes from Goleddf, which means slope or hillside, making the correct English translation: "Head of the White Slope". Pen yr Ole Wen is often climbed as part of a longer route on the Carneddau range. It is the same height as England's highest peak, Scafell Pike. The mountain's average temperature hovers around 5 degrees Celsius.

Llyn Idwal is a small lake (approximately 800 m by 300 m, or 28 acres) that lies within Cwm Idwal in the Glyderau mountains of Snowdonia.It is named after Prince Idwal Foel, a grandson of Rhodri Mawr, one of the ancient Kings of Wales. Legend states that the king's unfortunate offspring was murdered by being drowned in the lake. In fact Idwal Foel died in battle against the Saxons in 942 and an alternate version claims that he was cremated beside the lake, as was the burial custom for Celtic nobility. A number of small streams flow into Llyn Idwal from around Cwm Idwal. One small river flows out and joins the Afon Ogwen river at Pont Pen-y-Benglog near Ogwen Cottage, immediately above the Rhaeadr Ogwen waterfall.