Niggly Cave, Junee-Florentine karst
Part of Australia's deepest known cave system, in the Junee-Florentine limestone of southern Tasmania. It drops by shafts and squeezes to an underground river that rises at Junee Cave; by 2022 the system reached 401 m deep.
Dated events and their evidence
- about 348,000 years ago mainstream
flowstone in Niggly Cave seals over river gravels more than 350,000 years ago (uranium-thorium), so the gravels are older still source - 1994 CE mainstream
Niggly Cave is discovered; it is soon counted as the deepest explored cave in Australia source - 2019 CE mainstream
Niggly Cave is connected to the Growling Swallet system, bringing the depth record to 397 m source - 2022 CE mainstream
in late July Southern Tasmanian Caverneers connect Delta Variant cave to the Niggly/Growling Swallet system, at 401 m Australia's deepest known cave source
Where
42.7372° S, 146.5954° E
The point is Junee Cave near Maydena, where the system's water comes out. Niggly Cave itself opens at about 740 m on the western slopes of Florentine Peak in Mount Field National Park.
Sources
- https://en.wikipedia.org/wiki/Niggly_Cave
- https://doi.org/10.26749/rstpp.131.67
- https://www.abc.net.au/news/2022-08-01/explorers-uncover-australia-s-deepest-cave-in-southern-tasmania/101286000
- https://ozgeology.com/blogs/news/inside-australia-s-deepest-hidden-cave-system
Each event carries Aion's own evidence grade (mainstream, disputed or speculative). This page repeats what the globe shows for this place.