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Hiking trails & Routes

Cwmorthin Falls – Cwmorthin Slate Mill loop from Blaenau Ffestiniog

Hiking trails & Routes

Cwmorthin Falls – Cwmorthin Slate Mill loop from Blaenau Ffestiniog

Moderate

4.5

(40)

193

hikers

Cwmorthin Falls – Cwmorthin Slate Mill loop from Blaenau Ffestiniog

03:30

10.5km

480m

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 protected areas

Please check local regulations for:

Parc Cenedlaethol Eryri

Waypoints

A

Start point

Bus stop

Get Directions

1

240 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 •

Tip by

2

319 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 …

Tip by

3

532 m

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 …

Tip by

4

911 m

Ruins of Slate Building by the Lake

Highlight • Historical Site

1.33 km

Llyn Cwmorthin

Lake

6

1.75 km

Rhosydd Chapel Ruins

Highlight • Historical Site

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.

Tip by

7

2.78 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

8

3.03 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

3.70 km

Ruins

Ruins

10

4.48 km

Moel-yr-hydd

Highlight • Viewpoint

Stunning views over Moelwyn mawr/back, reservoirs and down to Blaenau Ffestiniog.

Tip by

B

10.5 km

End point

Bus stop

Way Types & Surfaces

Way Types

4.52 km

3.99 km

1.26 km

693 m

< 100 m

Surfaces

5.04 km

1.80 km

1.78 km

1.20 km

690 m

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Elevation

Elevation

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

Highest point (610 m)

Lowest point (190 m)

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Weather

Powered by Foreca

Wednesday 1 July

15°C

11°C

12 %

Additional weather tips

Max wind speed: 23.0 km/h

to get more detailed weather forecasts along your route

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