Landwards directed explosion (Photo: Tom Pfeiffer)
More on VolcanoDiscovery:
: A third tectonic setting where volcanism occurs is believed to be the result of mantle plumes and not directly related to plate boundaries. So called hot spot volcanoes fall into this category.
Popocatépetl Volcano Special
: The activity of Mexico's most active and largest volcano has been picking up gradually during the past months. If you like to join a small group of volcano enthusiasts, join us, stay 5 nights near the volcano and move around for extended day- and night-time observation.
How to watch volcanoes? Which volcano to choose? Some guidelines.