Are currently erupting or have erupted in the recent past.

Show signs of volcanic activity, such as the emission of gases, steam, or ash.

Have the potential to erupt in the future.

Dormant volcanoes:

Are not currently erupting but have the potential to erupt in the future.

Have not erupted for a long period of time but could become active again in the future.

May show some signs of activity, such as the emission of gases or the presence of hot springs, but not to the same extent as active volcanoes.

Extinct volcanoes:

Are considered to be unlikely to erupt again in the future.

Have not erupted in a very long period of time and show no signs of recent or current activity.

Are identified based on their geologic features and age, as well as the history of volcanic activity in the area.

It is important to note that it can be difficult to accurately determine whether a volcano is dormant or extinct, and classifications may change over time based on new information and scientific understanding.