General Information about Caving on Mynydd Llangatwg

The purpose of these pages is to provide up-to-date information about caving on Mynydd Llangatwg (Llangattock Mountain) and in the Clydach Gorge
This information was last updated on 24/09/17.

Latest News

Road construction work is underway in the Clydach Gorge and is due to continue until 2018. Note that there will be specific periods during 2017 when access will not be permitted to certain caves due to blasting and excavation work in the vicinity. Ogof Nant Rhin and Ogof Pont Gam will be closed on October 6th to 8th; Temporary closure of Ogof Capel and Ogof Gelynnen will be necessary on other dates.

The next meeting of MLCMAC will be held at the NRW office in Abergavenny on Friday 6th October 2017 at 8 p.m. Observers are welcome to attend.

Fixed aids which are adopted by MLCMAC and periodically inspected are now labelled with round metal tags marked "MLCMAC". You are reminded that the security of fixed aids in caves cannot be guaranteed. You use them at your own risk and should always inspect them carefully before use.

Although there have been no recent rockfalls from the cliff above Ogof Craig a Ffynnon the area cannot be considered stable. It is inevitable that further rock falls will occur from time to time in the future as they have done periodically over the last 4 decades especially after a thaw following freezing winter conditions. Permits are being issued, but parties visiting the cave should be vigilant to the possibility of falling rocks from anywhere along this section of cliff, and not remain in the area of the cave entrance longer than necessary.

The padlock on the entrance gate has been replaced after several parties reported problems opening it. If the key does not turn easily, please do not force it as the key has probably not engaged properly with the lock mechanism.

Two handlines marked BCA-G and BGA-H have been installed in Llangattock caves as part of the BCA rope testing programme. Please do not remove or substantially alter the rigging of these ropes. One is in in Antler Passage in Daren Cilau, the other is on the climb before 2nd BC in Craig-a-Ffynnon.

Permanent loan keys are available from CSS to bona-fide caving clubs on payment of a 10 pound deposit. Contact Adrian Fawcett (see contact details below).

Access to this cave is managed by Cambrian Caving Council. To limit further damage to formations, all trips must be led by a designated leader for the cave and party sizes are limited to leader + 2. A list of leaders can be found on the Cambrian Caving Council website.

Agen Allwedd gate can be opened from the inside when padlocked on the outside. Therefore the padlock should always be re-fastened as soon as the gate has been opened.
Craig-a-Ffynnon gate padlock is attached to the gate via a special metal bar. Please make sure the last person into and out of the cave knows how to re-fit the bar and lock.


Caves under Llangattock Mountain and in the Clydach Gorge come within the remit of the Mynydd Llangatwg Cave Management and Advisory Committee (MLCMAC). Wardens for the main caves are appointed every two years. MLCMAC works closely with Natural Resources Wales (formerly Countryside Council for Wales), and liaises with the local landowner, Brecon Beacons National Park, and other local bodies. Also it tries to keep the peace in the relationship between cavers and local residents.
Caving trips are monitored via the cave log books and 'caver counters' which are installed in certain caves.
The secretary of MLCMAC is currently Adrian Fawcett
AF's email address

Craig-y-Cilau Nature Reserve

The entrances to Agen Allwedd and Eglwys Faen are located within the Craig-y-Cilau Nature reserve.


In Agen Allwedd and Craig A Ffynnon, the use of carbide is explicitly forbidden. In the other caves it is strongly recommended that carbide is not used, and all spent carbide must leave the cave as it is a pollutant and is unsightly. Bats are present in most of the Llangattock caves and are adversely affected by the fumes. Your cooperation is appreciated.

Car Parking

Visitors should be aware that break-ins have occurred all too frequently to cars parked in the Daren car park and by the cattle grid on the Llangattock - Beaufort road. Parking space outside Whitewalls is limited, and access along the private road must not be blocked. At weekends in particular, please do not park at Whitewalls unless you are going to get changed inside, or have other business there.

Chelsea Spelaeological Society

CSS is the caving club who owns Whitewalls. Other caving groups may book accommodation here. For contact information, please see their web page.