Back Kategorie:Vulkane Afrikaans Categoría:Volcans AN Flocc:Fȳrbeorgas ANG تصنيف:براكين Arabic تصنيف:براكين ARZ শ্ৰেণী:আগ্নেয়গিৰি Assamese Categoría:Volcanes AST Kateqoriya:Vulkanlar Azerbaijani بؤلمه:یانارداغ AZB Категория:Вулкандар Bashkir
Wikimedia Commons has media related to Volcanoes.
Volcanoes are usually mountains (sometimes islands, lakes, plateaus, calderas, seamounts 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.
Many volcanoes are categorized both as volcanoes and other landforms, such as mountains (if qualified).