Mauna Loa in Hawaii is the largest active volcano on Earth by volume and area, rising 4,170m above sea level with its base extending 5km below sea level.
How many active volcanoes are there?
There are approximately 1,350 potentially active volcanoes worldwide. About 500 have erupted in recorded history.
What is the Ring of Fire?
The Ring of Fire is a 40,000km horseshoe-shaped belt around the Pacific Ocean where about 75% of the world's volcanoes are located.