Cách sử dụng
Basalt is a type of rock that is formed from lava when it cools down. It is usually dark in color and has a rough surface. Basalt can be found in many different parts of the world and is often used for things like building materials, statues, and even roads. You might also hear the word "basalt" used in the context of geology or volcanoes, as it is often found in areas where there has been volcanic activity.