Volcanoes are generally classified into four main types: – Cinder cones: These are the simplest type of volcanoes. They are hills, often steep and formed by an accumulation of congealed lava ...

The main place to find these types of volcanoes is the "Ring of Fire" that circles the Pacific Ocean. There are more than 450 volcanoes in the Ring of Fire, according to the National Oceanic and ...

There are two main types of volcano - composite and shield. The two types of volcano form in different places and have very different characteristics. Ash released from shield volcanoes often ...

California has seven active volcanoes, each with a unique eruption history, categorized by type and threat level. The USGS monitors these volcanoes, providing information to authorities and the ...