Just a pointer that Coillte have changed their access policies. Up until recently they had an "Open Access Policy" that allowed geoacaching under the following excerpt:
Since earlier this month they have replaced this with a new "Recreation Policy" which is available hereand in more detail here.The general public are welcome to use forest lands for non-commercial, informal, recreational purposes and in particular, the areas which are developed as amenity areas. Formal permission is not required for these purposes but access is subject to visitors taking due care for their safety and respecting the nature of Coillte's commercial operation and also its rights as a landowner.
This policy still allows access to forests but all visitors must act in accordance with their new "User Environmental Code" (Point 7 from the second link above). The environmental code specifically mentions the "Leave No Trace" ethics programme (More info here) which Coillte both support and co-fund. Geocaching in other countries has had problems with the LNT programme as they consider it to be "organised littering".
In order to avoid the same in Ireland I will be requiring everyone to obtain adequate permission from a Coillte employee responsible for the area in which the cache is hidden until we can come to some kind of formal agreement with Coillte that geocaching is permissible under their new policy. This change in policy is currently being discussed with other Reviewers until we can arrive at a consensus but I would rather take the cautious route for now.
On that note if anyone on this forum knows anyone working within Coillte who could help us broker an agreement or who would be willing to negotiate the agreement on behalf of Irish geocachers please contact me via my profile or by email.
Any caches placed prior to September of this year are still okay as Coillte advertised the "Open Forest Policy" via their website until at least August 26th. These caches were approved under the old policy and are now "grandfathered".