A man, aged in his twenties, was rescued after getting stuck in a cave in Co Fermanagh last night.
Cave rescue volunteers worked into the early hours of this morning to free the man.
The caver was not injured in the incident.
He became too tired to continue while he was on the return leg of a planned caving trip in a system on the Marlbank on the north side of Cuilcagh Mountain.
Five volunteers from the Irish Cave Rescue Organisation (ICRO) arrived at the scene at 9.15pm yesterday.
After initial attempts to assist the man, a call out for volunteers around Ireland was made at 10.44pm, according to a statement from the organisation.
A "hot point" was established underground where the caver was warmed and fed, the ICRO said.
Rock breaking and rescue rigging teams made a bypass to a "constricted section of passage near the entrance".
This allowed the caver to be hauled safely via the new route to the surface at 3.15am and the rescue was completed just after 4am.
More than 20 ICRO volunteers from both sides of the border attended the scene to assist the rescue operation, including people from Larne, Belfast, Dublin, and Clare.
ICRO chair Stephen McCullagh said it was a "very successful rescue".
"We were alerted around 8.30pm last night and a number of local wardens - who're highly experienced rescue people - made their way up to the cave," he added.
"It became clear that we had to extend the call out to the wider ICRO group.
"With more volunteers, we were able to engineer an easier route out of the cave, and the caver was then hauled vertically to the surface with ropes."
