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Watch What Happens When He Puts His Foot On Some Hot Lava

When erupting, a volcano expels molten rock known as lava. After the lava pours out from the volcano, it will eventually stop moving and solidify into igneous rock. Volcanoes are actually landforms that have been built by lava repeatedly erupting in that location over a period of time. The shapes of volcanoes can vary from stratovolcanoes, which have steep slopes, to shield volcanoes, which have shallow, broad sides. Stratovolcanoes are composed of ash layers and typically have lava flows that tend to be more viscous, while shield volcanoes usually have fluid basaltic flows of lava, which tend to create sheet-like forms. In this video, a professional demonstrates how viscous lava can be by carefully stepping on it with his shoe.
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