Llyn Dulyn

Llyn Melynllyn (Welsh for yellow lake) is a lake within the Carneddau range of mountains in Snowdonia, North Wales. It lies at a height of just over 2,000 feet (610 m), and has an area of some 18.5 acres (75,000 m2). Cliffs rise steeply from its western edge, up to the summit of Foel Grach, and down from which most of its feeder streams flow. A small dam was built at its northern end in 1887, but this was deliberately breached in 1970. The lake acts as a reservoir for the Llandudno area. Less than a kilometre to its north lies the larger Llyn Dulyn. The outflow from the lake is called Afon Melynllyn, this stream flowing north-east to join Afon Dulyn, itself a tributary of the river Conwy.

Foel-fras (944 m) is a mountain in the Carneddau range, about 10 km east of Bethesda in Wales. It lies on the border between the counties of Gwynedd and Conwy. With a summit elevation of 944 m it is officially the eleventh-highest summit in Wales. Foel-fras is located at the northern end of the main ridge of the Carneddau, between Drum to the north and Foel Grach to the south, with the subsidiary summit of Garnedd Uchaf (925 m) between it and Foel Grach. Due south and 400 m below lies the reservoir of Llyn Dulyn, while the smaller reservoir of Llyn Anafon lies to the north. Because of its position, it is the first of the Welsh 3000s reached when doing this walk from the northern end. It can be climbed by driving up the small road signposted "Aber Falls" in the village of Abergwyngregyn, passing the car park for the falls and continuing to a small car park at the end of the road. From there it is possible to take the track bearing left, later turning right to the summit of Drum and continuing along the ridge, or to take the track leading straight on to Llyn Anafon and then climbing up to the ridge between Drum and Foel Fras. An alternate route up the mountain is to start at the Western end of the Bwlch-y-Ddeufaen pass and take the steep track up the side of Drosgyl, following the fence line all the way to where the ground levels off. Here the views open up and the fence changes direction, running off at almost a right angle to the Southeast (left). From here, follow a small track Southwest until it intersects the larger track previously mentioned - marked by a small quartz-peppered cairn - which will lead you to Drum. From Drum the walk to the summit of Foel Fras is simply parallel to the fence line, which changes into a dry stone wall as you are nearing the summit. Car parking is available at the Eastern end of the pass.The summit plateau has some ornithological interest in that it is one of the best places in Wales to observe dotterel on their spring and less frequent autumn migration.Foel Fras can also be reached from Llanfairfechan, an equally beautiful route as that from Aber Falls. Follow the road up through the village of Llanfairfechan until Terrace Walk, take the path from Terrace Walk that takes you past Hengae Farm, then follow the path that can take you to the summit of Garreg Fawr, Drum, Foel Fras and more.

Afon Melynllyn is the outflow from Llyn Melynllyn, a lake in the Carneddau mountains in north-west Wales. It is a tributary of Afon Dulyn, itself a tributary of the river Conwy.

Foel Grach is a mountain in the Carneddau range. It is the eighth-highest summit in Snowdonia as well as Wales, and is included in the Welsh 3000s. It is located on a broad ridge extending northwards from Carnedd Llewelyn to Carnedd Gwenllian (formerly Y Garnedd Uchaf) and Foel-fras. An emergency refuge has been built below the summit. Compared to the surrounding mountains, much deeper snow settles here due to its rather broad summit and high grassy slopes. On clear days the Isle of Man and even the Mourne Mountains in Northern Ireland can be seen from the summit.

Gyrn Wigau is a summit of the Carneddau range in Snowdonia, Wales, and forms a part of the western Carneddau commonly known as the Beras. It is a top of Drosgl. It has only 15 metres of topographical prominence but is listed as a Nuttall.

Carnedd Gwenllian (named Y Garnedd Uchaf before 2009) is a minor summit of the Carneddau range in Snowdonia, Wales, and included in the Welsh 3000s. From the summit, distant views to the north can extend as far as Ireland and the Isle of Man, and to the South as far as the Berwyn Ranges. It lies between Foel Fras and Foel Grach, but is not always included in the Welsh 3000s, as its summit rises only slightly above the ridge. However, it is classed as a Hewitt. Its slopes, like all those in the northern Carneddau, are largely grassy, although they are steep. The slopes can receive significant accumulations of snow-drifts during blizzards in winter. In the past, snow beds have survived on the mountain as far as June. The annual average temperature on Y Garnedd Uchaf is relatively cold, ranging between 4-5 degrees Celsius.For some years there was a campaign by the Princess Gwenllian Society to have the name of this peak changed from Y Garnedd Uchaf to Carnedd Gwenllian. Gwenllian of Wales (1282–1337) was the only daughter of Llywelyn ap Gruffudd. After her father's death, she was held in a nunnery at Sempringham in Lincolnshire until she died. In September 2009, the summit was renamed Carnedd Gwenllian, and the Ordnance Survey agreed to use the dual name Carnedd Uchaf/Carnedd Gwenllian on its maps from 2010 onwards.

Y Drosgl is a summit of the Carneddau range in Snowdonia, Wales, and forms a part of the western Carneddau, also known as the Berau, meaning 'stacks' or 'ricks'. It lies on a ridge heading west from Carnedd Gwenllian and Bera Mawr towards Bethesda. A large ancient burial cairn, dating from the Bronze Age, adorns the summit, from where good views of Cwm Caseg and the Menai can be seen.

Llyn Llyffant is the highest lake in Wales, located at grid reference SH 687 645. Its name translates into English as "frog lake". It lies at an elevation of approximately 815m above sea level.

Drum (Welsh pronunciation: [ˈdrɨm]) (Welsh: Y Drum = the ridge) is a summit in the Carneddau mountains in Wales, 2 km north-east of Foel-fras. It is 771 m (2,526 ft) high. It is also known as Carnedd Penyborth-Goch. Its eastern slopes are drained by the Afon Tafolog, a tributary of Afon Roe which flows through the village of Rowen before joining the River Conwy.

Bera Bach is a summit, height 807 metres, in the Carneddau mountains in north Wales. It is part of a ridge leading west from Garnedd Uchaf. The summit is a rocky tor, characteristic of the northern Carneddau. Bera Mawr and Bera Bach are together known as the Berau, meaning 'ricks' or 'stacks'. They are both excellent examples of the area's tors. To the west, the ridge continues to Drosgl. Despite Bach in Welsh meaning small, it is higher than Bera Mawr (mawr in Welsh meaning 'big'). Bera Bach can be climbed either from Aber Falls, or alternatively from Bethesda via Gyrn Wigau and Drosgl.

Carnedd y Ddelw is a summit in the Carneddau mountains in Wales, north-east of Foel-fras. It is the Nuttall top of Drum (Wales). Its eastern slopes are drained by the Afon Tafolog, a tributary of Afon Roe that flows through the village of Rowen before joining the River Conwy. It is also the final top on Carnedd Llewelyn's long northern spur. To the north-west is Tal y Fan, the most northerly 2000 foot tall mountain in the Carneddau and Wales. The summit has two large shelter cairns, hollowed out from a large Bronze Age burial cairn.

Pen y Castell is a summit in the Carneddau mountains in north Wales. It tops the east ridge of Drum (Wales). The summit consists of rocky outcrops amid a small boggy plateau. Views of the higher Carneddau ridge to the west, Craig Eigiau to the south, Tal y Fan to the north and the Conwy valley to the east can be seen.