From the small number of impact craters that appear on Martian lava flows, one can estimate that the planet was volcanically active as recently as a half-billion years ago—and may be active today.

从火星熔岩流上出现的少量陨石坑中，我们可以估计，在5亿年前，这个星球上的火山还很活跃——也许现在依然活跃。

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Iceland lies on the convergence of two tectonic plates and is one of the most volcanically active areas in the world.

冰岛位于两大地球板块聚合之处，是世界上最活跃的火山地区之一。

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This is one of the most volcanically active places on Earth.

冰岛是地球上火山活动最活跃的地带之一。

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The channels remained hidden because the once volcanically active region had been filled in by lava flows hundreds of millions years ago.

NPR: Radar Reveals Apparent Buried Channels On Mars

Building on this discovery, Galileo found that Io is by far the most volcanically active body in the solar system about 100 times more active than Earth.

ECONOMIST: Galileo and Jupiter

The reported Mediterranean tsunamis mainly occurred in the most seismic and volcanically active regions like the Aegean, Ionian and Tyrrhenian seas, the sea of Marmara, along the Algerian coast and Cyprus.

UNESCO: EDUCATION