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Noon's Hole
Noon's Hole (Irish grid ref H12684431) lies about 5 km northwest of the centre of Boho, in the townland of Old Barr in the parish of Devenish, County Fermanagh, close to the border with Boho parish. The cave is under part of the escarpment on the east side of the Glenade Sandstone uplands. At , this pothole was thought to have the deepest shaft in Ireland, but this honour was passed to the near-by Reyfad Pot, which contains an entrance shaft of . The continuation of the cave system (incorporating the Afternoon Series and High Noon's) contains of passage, and it connects to the resurgence at Arch Cave through three cave dives, making this system the 8th deepest in Ireland, at .〔(【引用サイトリンク】title=N Ireland - Deepest caves )〕 Noon's Hole used to be called "Sumera", meaning abyss, but gained notoriety and the new name of "Noone", after a notorious murder took place there. Ordnance Survey maps still use both names.
== Exploration ==
A ''Sumera'' is a bottomless pit, and locals initially treated Noon's Hole as a supernatural area, viewing it with suspicion and fear. However, in August 1895, the French cave explorer Édouard-Alfred Martel explored the cave for the first time, descending to . It was not until 1912 that a group called the Yorkshire Ramblers reached the bottom. Not discouraged by their equipment not having arrived from England, they made the descent of the complex shaft using a long rope ladder built from materials purchased from Fermanagh ships chandlers and timber merchants, hauling it up and down from the surface when the explorers found ledges to stand on. All they found at the bottom was a short passage leading to a sump. During the Easter of 1970, a group from the University of Leeds Speleological Association investigated the parallel shafts, and found that one led into of passages they named the After-Noon Series.
In the meanwhile, cave divers had been pushing in Arch Cave from which the water from Noon's Hole resurges. In 1972 Martyn Farr and Roger Solari passed an sump into a long canal, and then a sump into a major extension which extended into the mountain for a further to a third sump. The pair returned into 1973, and after a dive they emerged into the After-Noon series of Noon's Hole.
Easter 1975 a party followed a draught in the After-Noon series through a rocky crawl, to break out into a mile of new passage which included a streamway, the terminal sump of which corresponded to a sump with the main water flow in Arch II cave. This was named the High Noon Series. In 1984, a group managed to find a dry connection between High Noon and Arch II cave to create the 'finest sporting trip in County Fermanagh'.
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