http://www.newsweek.com/mountain-twice-high-tallest-building-found-hidden-under-waves-1846813

Researchers have uncovered a massive underwater mountain that was previously unknown in the Pacific Ocean.

The mountain, known as a seamount, sits around 13,100 feet below sea level and peaks at a depth of roughly 7,900 feet. Rising 5,249 feet above the ocean floor, the underwater mountain is roughly twice as tall as the world's tallest building—the Burj Khalifa in Dubai.