Indonesia
A massive supervolcano erupted at present-day Lake Toba around 70,000 BCE. It is believed to have caused a global volcanic winter and cooling of the climate, and subsequently led to a genetic bottleneck in human evolution, though this is still debated. The 1815 eruption of Mount Tambora and the 1883 eruption of Krakatoa were among the largest in recorded history. The former resulted in 92,000 deaths and created an umbrella of volcanic ash which spread and blanketed parts of the archipelago, and made much of Northern Hemisphere without summer in 1816. The latter produced the loudest sound in recorded history, and resulted in 36,000 deaths that are attributed to the eruption itself and the tsunamis it created. Significant additional effects were also felt around the world years after the eruption. Recent major disasters due to seismic activity include the 2004 Indian Ocean earthquake and the 2006 Yogyakarta earthquake.
1962 FIFA World Cup
The Valdivia earthquake, the most powerful earthquake ever recorded, occurred on 22 May 1960. With over 50,000 casualties and more than 2 million people affected, the earthquake forced the organising committee to completely modify the World Cup's calendar. Talca, Concepción, Talcahuano and Valdivia were severely damaged and discarded as venues. Antofagasta and Valparaíso declined to host any matches as their venues were not financially self-sustainable. Viña del Mar and Arica managed to rebuild their stadiums while Braden Copper Company, then an American company that controlled the El Teniente copper mine, allowed the use of its stadium in Rancagua. The most used stadium was the Estadio Nacional in Santiago, with 10 matches; the Estadio Sausalito in Viña del Mar hosted 8 matches, and the stadiums in Rancagua and far-away Arica (the only location that was not close to the other cities) both hosted 7 matches.