The first sinkhole in September split a GAA pitch in two.
Another sinkhole has emerged in Co Monaghan, 35 metres from the Dromgossat Road close to Magheracloone, the scene of a previous sinkhole three months ago.
The first sinkhole, which emerged in SeptemberExperts said that the most likely cause of the fist one was the collapse of an old gypsum mine.
The latest sinkhole is nine-metres in diameter and has led to a road closure.
The LP4900 local road at Drumgossat has been closed with immediate effect.
