3 ms·

As I can't read the article, I'm going to guess: Is it when the Atlantic broke through to create the Med?

• SAI_Peregrinus 9y ago
  "Dry Falls (pictured), the site of a former waterfall, is a horseshoe-shaped cliff that’s twice as high and three times as wide as Niagara Falls, making it the largest confirmed waterfall in the planet’s history. Today, the site is preserved as Sun Lakes-Dry Falls State Park, where visitors can see the impact of these relatively recent geologic events through overlooks, canyon trails and interpretative displays." It's in Washington state in the USA. The key point is that it's the largest confirmed waterfall, the creation of the Med might not have created a waterfall and instead been more of a massive surprise river.