Pollatoomary, Underwater cave in Partry Mountains, County Mayo, Ireland
Pollatoomary is a limestone cave system located near Killavally in County Mayo, sitting beneath farmland in the Partry Mountains. The cave consists of flooded passages that extend deep underground, making it accessible only to underwater explorers.
The cave was first explored in 1978 when an experienced cave diver ventured into its underwater passages. Since then, it has attracted international attention from the diving community who continue to study its geology and passages.
The cave represents a significant site for the international cave diving community, drawing experienced divers who seek to explore its challenging underwater passages.
You will need permission from the landowner before visiting, as the site sits on private farmland in a rural area. Only trained and experienced underwater divers should attempt to explore the cave passages.
An underground river flows through this cave system, connecting it to other limestone formations in the area. This hidden waterway contributes to the site's geological complexity, which scientists continue to investigate.
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