Scientists at NASA's Jet Propulsion Laboratory have recreated spider-like araneiform terrain, a geologic formation found on Mars, in a lab on Earth.

A team of scientists at NASA have confirmed how Mars' 'spider' formations are carved by carbon dioxide. They were first discovered in 2003 and each formation can stretch more than half-a-mile from end-to-end.

To uncover the hidden features, researchers employed a sophisticated technique. New research presented at the Europlanet Science Congress this week has uncovered astonishing findings beneath the dusty surface of Mars.