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| Pahoehoe lava is usually the first kind of lava to erupt from a volcano. The lava that flows from Pahoehoe flows is very viscous, that means that it is thin and liquid. It has a smooth surface that dries pretty quickly and becomes thicker and flows more slowly than the still hot lava below the surface. As the surface of the flow dries, it turn black and becomes crusty. The top crust is not safe to walk on because it is weak and can collapse. | ||||||||||||
