Consisting largely of fossil passage, Ogof Draenen is particularly vulnerable to caver inflicted damage. Taping is probably the most important of a number of conservation measures that have been taken, the others being: access control; preservation of remoteness; and education.
In practice this means that, where possible, passages should be taped in the "tramline" fashion as detailed in the NCA cave conservation handbook (section 11-4). In some ares the nature of the passage will preclude this and special efforts may have to be made to protect areas of particular scientific or aesthetic interest. In such cases thought should be given to protecting:
In some areas passages have been taped off completely either after they have been explored as in the case of Morgannwg Passage or in the case of some passages in Prisoners of War series, completely unentered where they have been demonstrated by surveying to be interconnected loops. In these instances it is helpful to place signs explaining why entrance to the passaged is barred.