Cave Explorers Discover the Deepest Known Cave in Australia

GUILIN, CHINA – NOVEMBER 11: Amy Dunlop of Australia climbs a route in Brothers Cave on November 11, 2019 in Yangshuo near Guilin, China. (Photo : Photo by Adam Pretty/Getty Images for LUMIX) 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. Australia’s Deepest Known Cave Underground scientists have navigated what is now Australia’s deepest existing cave. Its profundity is roughly 4 meters greater than that of its predecessor, the Niggly Cave.