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Rhosydd Chapel Ruins – Llyn Cwmorthin loop from Blaenau Ffestiniog

Routes

Hiking trails & Routes

Rhosydd Chapel Ruins – Llyn Cwmorthin loop from Blaenau Ffestiniog

Moderate

4.6

(27)

160

hikers

Rhosydd Chapel Ruins – Llyn Cwmorthin loop from Blaenau Ffestiniog

02:55

8.59km

430m

Hiking

Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels. The starting point of the route is accessible with public transport.

Last updated: April 16, 2026

Tips

Your route passes through a protected area

Please check local regulations for:

Parc Cenedlaethol Eryri

Waypoints

Start point

Bus stop

Get Directions

883 m

Rhaeadr Ogwen (Ogwen Waterfall)

Highlight • Waterfall

You can drive almost directly to the waterfall by car. The car park is a popular starting point for hikes, even higher up.

Translated by Google •

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962 m

Cwmorthin Falls

Highlight • Viewpoint

Car park gets full up top so park sensibly park close to next car gives more space for others. Don’t park in front of gate as this is used by …

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1.18 km

Cwmorthin Slate Mill

Highlight • Historical Site

Cwmorthin Slate Quarry is an impressive area, a magical hanging industrial valley above Tan y Grisiau that highlights Wales' industrial heritage with its massive works and ruins. It was in …

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4.33 km

Ruins

4.82 km

View of the Slate Quarry and Valley

Highlight • Structure

You can see in both directions down the valley. Just cut back on yourself on the way up the hill - a path has been laid

Tip by

5.08 km

Rhosydd Quarry — Ruins and Waterfall

Highlight • Waterfall

A poignant vestige of the area’s slate mining heritage. These mines produced around 200 million slates from the 1830s until the beginning of the 20th century. Conditions for the workers, …

Tip by

6.10 km

The haunting remains of the chapel that used to serve the men who worked at the Rhosydd Quarry. It makes for a stunning foreground for your photographs. This area is peppered with remains of the slate mining industry's infrastructure.

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6.72 km

Llyn Cwmorthin

Highlight • Lake

6.98 km

Ruins of Slate Building by the Lake

Highlight • Historical Site

8.59 km

End point

Bus stop

Way Types & Surfaces

Way Types

3.90 km

2.87 km

1.19 km

574 m

< 100 m

Surfaces

4.74 km

1.77 km

1.07 km

957 m

< 100 m

Elevation

Nothing selected – click and drag below to see the stats for a specific part of the route.

Highest point (610 m)

Lowest point (180 m)

Weather

Thursday 7 May

14°C

3°C

36 %

Additional weather tips

Max wind speed: 16.0 km/h

to get more detailed weather forecasts along your route

Our route recommendations are based on thousands of hikes, rides, and runs completed by other people on komoot.

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Rhosydd Chapel Ruins – Llyn Cwmorthin loop from Blaenau Ffestiniog

Rhaeadr Ogwen (Ogwen Waterfall)

Cwmorthin Falls

Cwmorthin Slate Mill

View of the Slate Quarry and Valley

Rhosydd Quarry — Ruins and Waterfall