Lava is rock from the molten center of the earth, once spewed through fractures in the planetary crust or from a volcanic eruption. Once cooled, the resulting rock is dark...
Lava is rock from the molten center of the earth, once spewed through fractures in the planetary crust or from a volcanic eruption. Once cooled, the resulting rock is dark...
Lava is rock from the molten center of the earth, once spewed through fractures in the planetary crust or from a volcanic eruption. Once cooled, the resulting rock is dark...