Regulations United Kingdom Bannau Brycheiniog National Park
Ogof Ffynnon Ddu II
Caving
Regulations on 30 October 2026
Signs at the site and later resolutions prevail; check the source.
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Permit required
Caving · All year
In force on 30 October 2026
OFD Cave Advisory Group
If you were looking for the OFD Cave Management Committee, you have been redirected here. This is because, following a reorganisation in Natural Resources Wales, the OFD Cave Management Committee has been wound up. At the wishes of NRW, SWCC now manage access to the OFD cave system. […]
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Access to Ogof Ffynnon Ddu I, II & Cwm Dwr (including Cwm Dwr 2)
The entrances to OFD I, II and Cwm Dwr are located on land owned by either Natural Resources Wales or South Wales Caving Club. Access to these entrances is administered by SWCC by means of a permit, which must be produced when collecting a key from SWCC HQ. Unless you are a member of a club with an annual permit, you will need to arrange this in advance by applying for a permit with the permit secretary, who will issue you with codes to access keysafes to collect your keys. You should allow a minimum of two weeks between your application and your planned trip.
Published by South Wales Caving Club · Access to OFD
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Regulated
Caving · All year
In force on 30 October 2026
Columns Access
Access to the Columns (in OFD II) has been restricted since 1978 following a number of incidents of wanton damage in the area. The Columns and adjacent floor are particularly vulnerable because, being form from limekiln seepage, they are much more fragile than conventional calcite formations. Therefore, all parties visiting the Columns must be accompanied by a Warden. Wardens will normally be available to accompany parties on the Sundays of the Easter, May Day, Spring and August Bank Holidays, and New Years Day itself.
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OFD Columns
The Columns are generally kept locked for conservation reasons. Access is permitted on New Year's Day, and on the Sunday immediately preceding each Bank Holiday Monday (i.e. Easter Sunday and the Sundays before the Early May, Spring and Summer bank holidays).
Sectors:
- The Columns
Published by South Wales Caving Club · Access to OFD
In Bannau Brycheiniog National Park