Scientists have found the largest undersea landslide on the Great Barrier Reef Scientists have discovered evidence of the largest known undersea landslide along the Great Barrier Reef, finding the remnants of an ancient, massive slip measuring about 30 times the volume of Australia's famous rock formation, Uluru. This ancient landslide complex – called the Gloria Knolls Slide – is what remains after a huge amount of sediment that once made up Australia's continental shelf broke off in a violent undersea collapse that took place more than 300,000 years ago. Read more: http://www.sciencealert.com/scientists-have-found-the-largest-undersea-landslide-on-the-great-barrier-reef