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Penwyllt and Ogof Ffynnon Ddu National Nature Reserve

Ogof Ffynnon Ddu is one of the most extensive cave networks in Europe. Above ground are limestone pavements and scarps.

OS grid ref SN 856155 (car park) to SN 868160

In and around Penwyllt are the remains of former quarry-workings including tramroads and inclines scattered across the landscape.

Geology

    • Carboniferous: Limestone, Millstone Grit

Maps

    • OS Landranger 160, Explorer map OL12
    • Geological - BGS 1:50,000 sheet: 231 ‘Merthyr Tydfil’

Guides

    • Geotrail due out in 2008

Facilities

    • car parking at Penwyllt at SN 856155
    • Entry: free

Accessibility

    • open country; some rough ground; mountain environment - take care!

Transport links

    • By car – on minor road off A4067
    • By train - nearest stations at Neath and Merthyr Tydfil
    • By bus - 63 service (Stagecoach) stops at Glyntawe & Pen-y-cae
    • by bike -

Other attractions nearby

What's New
Crackdown on Illegal Offroading

Bank holiday weekend operation to catch illegal off-roaders in the Park