Ring of Fire Volcanoes

The ring of fire is an area in the basin of the pacific osean where a large number of earthquakes and volcanic eruptions occur. in a 40.000km horseshoe shape, it is associated with a nearly continous series of oceanic trenches, volcanic arcs, and volcanic belts and or plate movement. It has 452 volcanoes and is home to over 75% of the worlds active and dormant volcanoes. The ring of fire is sometimes called the circum-pasific belt. About 90% of the worlds earthquakes and 81% of the worlds largest earthquakes occur along the ring of fire. The next most seismically active region (5-6% of earthquakes and 17% of the worlds largest earthquakes) is the alpide belt, which extends from Java to the northern atlantic ocean via the himalayas and southern europe.

The most dangerous and active volcanos in the world : 

 10. Mauna Loa - Hawaii

 Mauna loa is the biggest shield volcano, with its peak about 120ft.

9. Taal Volcano - Philipines

Taal volcanos is complex volcanos, locaated in luzon islands

8. Ulawun - Papua New Guinea

7. Nyiragongo - Democratic Republic of Congo

6. Merapi - Central Java Indonesia

5. Galeras - Colombia

4. Sakurajima - Japan 

3. Popocatepetl - Mexico

2. Vesuvius - Italy

1. Yellowstone Caldera - USA

By wikipedia.