|Rank||Cave Name||Length (km)||Vertical Range (m)||Region||Type||More Info|
|1||Reyfad - Pollnacrom - Polltullybrack||6.7||193||Co. Fermanagh||All cave||Short description|
|2||Shannon Cave - Polltullyard||5||130||Co. Fermanagh||All cave||Short description|
|3||Noon's Hole - Arch Cave||3.7||108||Co. Fermanagh||All cave|
|4||Pollaraftra||3.13||73||Co. Fermanagh||All cave|
|5||Tullyhona Rising Cave||1.5||65||Co. Fermanagh||All cave|
|6||Pollthanaclanawley (Pollnaclanawley)||< 1||63||Co. Fermanagh||All cave|
|7||Aughakeeran Pot||< 1||61||Co. Fermanagh||All cave|
|8||Black Pot||< 1||60||Co. Fermanagh||All cave|
If you don't see the cave you want, but you know it should be in the N Ireland section, remember that this list only shows caves with at least 60 m depth of natural passage. Other caves may show up in the list of longest caves in N Ireland.
However, if you are looking for a specific cave that does have at least 60 m depth of natural passage, and should be listed here, please let me know about it so I can update the database.