This is a horseshoe-shaped zone of seismic and volcanic activity that encircles the Pacific Ocean. It's a zone of frequent earthquakes and volcanic eruptions, caused by the movement and interaction of tectonic plates.

Some notable coastlines that are part of the Ring of Fire include:

* Western coast of North and South America

* East coast of Asia

* Islands of the western Pacific Ocean

While the Ring of Fire is the most active seismic zone, it's important to remember that earthquakes can occur anywhere in the world, though less frequently outside this zone.