To'uri Cave

{{short description|Karst cave located on Mangaia, Cook Islands}}

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| name = To'uri Cave

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| location = Mangaia, Cook Islands

| coords = {{Coord|21|54|30|S|157|56|30|W|display=inline, title}}

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| depth = 3m

| length = 489m

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To'uri Cave is a karst cave located on Mangaia, Cook Islands in the Tava'enga district. The cave contains two running subterranean streams, one freshwater and the other salt.{{cite book|last=Stanley|first=David|title= South Pacific Handbook|publisher=Moon Travel Handbooks|pages=351}}{{cite web |url=https://www.sprep.org/att/IRC/eCOPIES/Countries/cook_islands/34.pdf |title=Caves and Speleogenesis of Mangaia, Cook Islands |author=Joanna C. Ellison |publisher=National Museum of Natural History |date=August 1994 |accessdate=31 July 2020}} There is a 400 metres sump inside the cave which ends in a permanent sump.{{cite web|url=http://tamug.edu/cavebiology/reprints/Reprint-61.pdf |format=PDF |title= Anchialine Caves and Cave Fauna of the South Pacific |last=Iliffe |first=Thomas}}