Volcanoes are usually mountains (sometimes islands, lakes, calderas or lava domes) that are formed when magma (liquid rock) wells up from inside the Earth. There are also analogous formations away from the Earth.
Subcategories
There are 17 subcategories to this category.
Articles in category "Volcanoes"
There are 5 articles in this category.
*
C
D
P
V
Last updated: 06-02-2005 13:13:31