Phrases with «ancient lava flows»

The far side has significantly fewer of the familiar dark patches, formed by ancient lava flows. (discovermagazine.com)
See the scars of ancient lava flows while traveling to the volcano's foothills, and then hop off your coach to walk to the top. (lonelyplanet.com)
Astronomers originally assumed that the light plains were ancient lava flows from volcanoes. (sciencenews.org)
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