Arizona is about 8,500 miles from Australia—more than a third of the world away. Yet scientists think a chunk of the mountainous walls of the Grand Canyon ... just "didn't look a lot like ...

Buried deep in Australian waters is a virtually unknown ... south of Kangaroo Island - are deeper than America's Grand Canyon, and are in water twice as deep as Mount Kosciuszko is high.

A chunk of the rock sequence that has been sliced through to form this natural wonder of the world now sits thousands of kilometres away in Tasmania, Australia. To peer into the Grand Canyon is to ...