Henllys Quarry

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Henllys Quarry
Henllys quarry.jpg
Rock Type Quarried Sandstone
Climbing Style Trad/Sport
Approach Time
Area Sandstone
Sub Area Sandstone Eastern Valleys
WGS-84 Location 51.643929, -3.0763274
OS Grid Ref. ST 256 944
WGS-84 Parking Location
GR Parking Location
Base Elevation 383 metres (SRTM Estimation)
General Info
Faces Direction
Wind Sheltered
Climbing Type
Crags Within 5.0 km

Blaen Bran Quarry, Cox's Quarry, Crosskeys Quarry, Crymlyn Quarries, Cwmcarn, Fernlea Slabs - Risca, Henllys Quarry, Swffryd Wood Quarry, Tyle y Coch


New sports routes are allowed - retro bolting permissible with first ascentionists permission (not necessary).


A broken, east-facing crag near the summit of Twmbarlwm (the highest southerly point in Gwent), with outstanding views of the Usk Valley and Bristol Channel.

The quarry consists of one large central buttress and a smaller right angled buttress to the left.

The crag is generally slabby with clean cracks and grassy top outs. A wooden post fenceline is available for belays. There is little seepage and the crag dries very quickly due to its exposed position and the bedding of the rock which dips back into the hillside (geologists will note this is because the crag is located upon the far eastern edge of the syncline which forms the South-East Wales Coalfield, less enlightened climbers will simply note the incut nature of the holds).


From the M4 at junction 26, drive up to a roundabout (2 miles), turn left up the A4051 to the next roundabout. Turn left at this roundabout, and left again at the next roundabout. At the next roundabout turn left and follow the road round to Henllys, if not feeling too dizzy by this stage. Turn left just before some overhead cables, and go up the hill to park by Henllys Chapel. Take the footpath up the hill, to where the quarry is soon visible.

Alternatively, if the Forest Drive in Cwmcarn is open, you can drive to the upper car park. Follow the footpath at the car park entrance uphill and then left to meet an obvious conifer plantation on the other side of the hill. The quarry is about 100m further along the rough track north following the dry stone wall.


It is easy enough to walk down either side.


The following routes are hopefully described from left to right:

Henllys Quarry
  1. Dire Slab - VD
    The slab to the far left of the broken wall. 8m

  2. Hang on Crack - VS, 4b
    The overhanging crack. 8 m

  3. Farmers Bulge - HVS, 4b
    Climb over the bulge to a direct finish (no good protection). 8m

  4. Flaggin Flake - S
    the climb next to a small cave to the right of Farmers Bulge. 8m

  5. Chossey Mossey - HS
    The obvious arête to the left of the main wall (the grass won't hold you?). 8m

  6. The Exiles’ Line - D
    The ‘slabby thing’ over left from the left-hand crack on the central face. 10m

  7. A Tale Of Two Farmers - S
    The left-hand crack on the central face of the quarry. Watch out for the chossy grass ledge. An escape left can be made from the ledge. 10m

  8. Spaghetti Incident - VS 4c *
    The slab between the two obvious cracks. Tricky move up to a pocket.Gain the ledge then up the final wall.

  9. Farmyard Frolics - S
    The central crack. 10m

  10. Castell Henllys - HVS, 4c
    The face immediately to the right, with a bad landing and no gear. 12m

  11. Faith Needed - Fr. 5

  12. The Female of the Species is More Deadly ...Than The Male - S
    The face approximately 5m right of the Castell Henllys, left of a large crack. Climb the groove exiting left at its top, and then finishing direct. 14m


  1. Dire Slab - James 86 19th September 2009
  2. Hang on Crack - James 86 19th September 2009
  3. Farmers Bulge - James 86 19th September 2009
  4. Flaggin Flake - James 86 19th September 2009
  5. Chossey Mossey - James 86 19th September 2009
  6. The Exiles’ Line - Mark Salter 1994
  7. A Tale Of Two Farmers - Mark Salter 1994
  8. Spaghetti Incident -Alessandraio Savi 2023
  9. Farmyard Frolics - Mark Salter 1994
  10. Castell Henllys - Mark Salter 1994
  11. Faith Needed - Nick Rocke 21/06/2022
  12. The Female of the Species is More Deadly ...Than The Male - Mark Salter 1994

Henllys Quarry