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Volcanic activity created a cave under the moon's surface

Photo: Charlie Riedel / AP

The Japan Aerospace Exploration Agency (Jaxa) discovered a chasm beneath the surface of the moon, measuring 50 km long and 100 meters wide, according to The Guardian.

Why it matters: Jaxa identified the cave as a lava tube created by volcanic activity over three billion years ago. A senior Jaxa researcher, Junichi Haruyama, said lava tubes could be "the best candidate sites for future lunar bases."