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fromwww.scientificamerican.com
5 days agoWatch a mysterious wave of darkness spread across Mars
Volcanic ash is rapidly spreading across Mars, revealing significant surface changes due to strong winds and hinting at buried water ice.
The cave, which was found by Hekla Tang, the snowmobile operations manager for tour company Arctic Adventures, was likely formed by meltwater and shifting ice and features a spacious chamber made of high-clarity ice streaked with layers of volcanic ash from past volcanic eruptions. Once it was discovered, the company told Travel + Leisure it worked to build out the entrance and add lighting.