What is a pyroclastic flow?
Pyroclastic flows are high-density mixtures of hot, dry rock fragments and hot gases that move away from the vent that erupted them at high speeds. Most pyroclastic flows consist of two parts: a basal (bottom layer) flow of coarse fragments that moves along the ground, and a turbulent cloud of ash that rises above the basal flow. Ash may fall from this cloud over a wide area according to the direction of the wind from the pyroclastic flow.
Are pyroclastic flows destructive?
Yes! A pyroclastic flow will destroy nearly everything in its path. With rock fragments