During the 1960s and ’70s, Hawaii’s volcanic landscape was used to prepare Apollo astronauts for rugged Moon terrain. Today, NASA uses the lava fields of Kilauea volcano to help simulate the surface of Mars.

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Are Volcanoes Dangerous When They’re Not Erupting?

It’s no surprise that an erupting volcano is one that should be avoided at all costs, given the extreme heat of the lava, the rocks pelting through the air, and the suffocating ash. But what about volcanoes that aren’t erupting? Can they also be dangerous? Volcanoes can be dangerous even when