New evidence suggests Olympus Mons was once bordered by a Martian ocean that played an important role in landmark streaks on the planet's surface.
found in July regarding gigantic cliffs surrounding Olympus Mons. Researchers believe those cliffs, or escarpments as they're called, mark an ancient shoreline inside of which lies a large depression where liquid water once swirled. The latest results support that idea, suggesting the lower part of the mountain crumbled when ice and water at its base became unstable upon encountering lava exuded from its insides.
"This collapse came in the form of huge rockfalls and landslides, which slipped downwards and spread widely across the surrounding plains," researchers wrote in aLycus Sulci, featured in the new images, stretches for 621 miles from Olympus Mons and stops just short of reaching the Yelwa Crater, a 4.
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