Magma
Basalt is a fine-grainded, dark-colored rock. Formed from the rapid cooling of flowing lava, it's the most common volcanic rock type on Earth. It can be polished and used for floors, walls and even pavers.
Basalt is a fine-grainded, dark-colored rock. Formed from the rapid cooling of flowing lava, it's the most common volcanic rock type on Earth. It can be polished and used for floors, walls and even pavers.