The Pacific Ring of Fire.

Is the large series of volcanoes surrounding the Pacific Ocean. It coincides with the edges of the Pacific plate, one of the world's main tectonic plates. The Ring of Fire is composed over 75% of the world's active and dormant volcanoes. Much of the geothermal energy activity occurs in the Ring of Fire. 

Major volcanoes in the Ring of Fire:

Paricutin Volcano, Mexico

Mount Saint Helens, Washington, USA

Mount Pinatubo, Philippines

Mt. Fuji, Japan