Mid-Atlantic Ridge

The longest mountain range on Earth, hidden underwater/Geology & Minerals

The Mid-Atlantic Ridge is a divergent tectonic plate boundary running roughly 16,000 km down the center of the Atlantic Ocean, from the Arctic to near Antarctica. It is the longest mountain range on Earth, mostly submerged beneath 2,500 m of water. Iceland is one of the few places where it rises above sea level. The ridge spreads at about 2.5 cm per year, continuously creating new oceanic crust as magma wells up from the mantle.