Last Saturday, a party of investigators found 'Delta Variant', a 401-meter-deep tunnel in Tasmania's Niggly-Growling Swallet underground complex inside the Junee-Florentine karst region.
Explorers just uncovered Australia s deepest cave miragenews.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from miragenews.com Daily Mail and Mail on Sunday newspapers.