Scoria is a type of volcanic rock that is formed when lava cools quickly and traps gas bubbles. This process gives scoria its lightweight and porous texture, making it easy to identify. The rock typically appears in shades of red, brown, or black, depending on its mineral content. Due to its unique properties, scoria is often used in landscaping and construction. It can serve as a decorative ground cover or as a lightweight aggregate in concrete. Additionally, scoria is sometimes used in gardening to improve drainage in soil, benefiting plants that require well-aerated conditions.