50 Underwater Discoveries That Shocked The World

Loki’s Castle

Loki’s Castle
Business Insider/YouTube

In between Norway and Greenland lies a field of several active hydrothermal vents in the middle of the Atlantic Ocean; this field can be found 73 degrees north on the ridge that separates Greenland and Norway, and it is known as Loki’s Castle. The castle lies 2,352 meters below the surface.

The vents were discovered with a remotely controlled underwater vehicle in 2008. Loki’s Castle contains five chimneys that sit atop a vast deposit of sulfide minerals; the mineral deposit is 825 feet wide and 300 feet across on top, making it the largest mineral deposit on the seafloor.