Volcanic Osrs is a mixture of rock, mineral, and glass particles expelled from a volcano during a volcanic eruption. The particles are very small—less than 2 millimeters in diameter. They tend to be pitted and full of holes, which gives them a low density. Along with water vapor and other hot gases, Volcanic Osrs are part of the dark ash column that rises above a volcano when it erupts.

Due to their tiny size and low density, the particles that makeup Volcanic Osrs can travel long distances, carried by winds. When an ash column is moved about by the wind, it is called an ash plume. Eventually, the ash in the sky falls to the ground. It may create a thick layer of dust-like material on surfaces for miles around the original eruption.

Organic Materials

Unlike the ash produced by burning wood and other organic materials, Volcanic Osrs can be dangerous. Its particles are very hard and usually have jagged edges. As a result, it can cause eye, nose, and lung irritation, as well as breathing problems. While in the air, ash can cause problems for jet engines, forcing airlines to cancel flights through the affected area. An ashfall that leaves a thick layer of ash may cause roofs to collapse, clog gutters, and interfere with air conditioning units. Animals in an area coated by Volcanic Osrs may have difficulty finding food, as the plants in the region may be covered in ash. Ashcan also contaminates water supplies.