What is a historical example of violent volcano explosion?

One of the most catastrophic volcanic eruptions in history was the eruption of Mount Vesuvius in AD 79, which buried the Roman cities of Pompeii and Herculaneum under a thick blanket of ash and pumice. The eruption released a deadly cloud of stone, ashes, and fumes to a height of 33 kilometers (20.5 miles), resulting in the deaths of thousands of inhabitants and preserving the cities in time. Another example is the eruption of Krakatoa in 1883, which caused massive tsunamis and claimed tens of thousands of lives, significantly affecting global climate for years afterward.