A volcanic hazard refers to any potentially dangerous volcanic process that puts human life, livelihoods and/or infrastructure at risk of harm. Several hazards may affect the area around the volcano, such as lava flows, pyroclastic flows, lahars and debris avalanches. Lava-flows, together with gas exhalations, mud pools, hot springs and rock avalanches, have an intermediate range, being most lethal in the surrounding of the volcano. Tephra fall can be dangerous, especially for persons with respi