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Fforest Fawr, near Caerphilly

Gateway to Castell Coch, one of the most picturesque castles in Wales

Autumn view at Fforest Fawr

What's here

Dogs welcome
Walking trail
A programme of work is underway to remove diseased larch trees here. This work is likely to continue to 2021. During this time, there will be some disruption to footpaths, mountain bike trails and bridleways. All closures and diversions will be clearly signposted and published on this page and on our social media channels.


Fforest Fawr is the stunning backdrop to Castell Coch, a famous castle nestled in the trees above the village of Tongwynlais.

This beautiful woodland is frequently used as a film location for productions ranging from Welsh historical dramas to children's TV programmes.

The forest has an industrial history and there are some impressive deep holes left by iron mining here.

There are two trails to the castle. 

Part of the Taff Trail, a long distance route for walkers and cyclists from Cardiff Bay to Brecon, passes through Fforest Fawr.

Removing diseased trees 

Work is underway to remove approximately 4000 diseased larch trees from Fforest Fawr as part of a nationwide strategy to combat larch disease which has affected millions of trees across Wales.

This work is likely to continue to 2021. 

It is being planned in two phases, so we can always keep areas of the forest open for people to enjoy, and so we can minimise the impact on protected species and local wildlife.

Read our FAQ document for more information about the felling.

Closures and diversions

During the work to remove diseased trees, there will be some disruption to footpaths, mountain bike trails and bridleways.

All closures and diversions will be published on this page and signposted in the woodland.

Please follow any instructions and diversion signs and do not enter the exclusion zone.

Download a map showing the diverted walking trail and the exclusion zone.

Walking trails

There are two waymarked walking trails from Castell Coch car park which is 1.5 kilometres from Fforest Fawr car park.

Sir Henry’s Trail

2.31 miles, 3.72km kilometres

Sir Henry’s Trail is a circular route through the forest, past Castell Coch and the former mining site known as Three Bears.

Burges’ Way

1.77 miles, 1.12 kilometres

Burges’ Way is a short circular trail through the forest. It goes past Castell Coch and the Blue Pool, one of the many former iron mining sites here.

How to get here

Fforest Fawr is near Tongwynlais off the A470. 

The OS grid reference is ST 143 838.

Car parking is free of charge.

Download the location map.


From the A470, follow the signs to Castell Coch. Continue past the castle entrance for 1.5 kilometres to Fforest Fawr car park.

Public transport

The nearest train station is in Taffs Well.

Fforest Fawr is on the Taff Trail cycle route, which goes between Cardiff and Brecon. For details of public transport visit

Find out more

Contact details

Tel: 0300 065 3000


Related document downloads

Fforest Fawr Location map PDF [149.5 KB]
Fforest Fawr information board & diversion route Overview of the planned larch felling PDF [933.6 KB]
Fforest Fawr felling FAQ PDF [303.0 KB]

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