You may be surprised at the answer.
Video – Popocatépetl Volcano, located just 43 miles (70 km) from Mexico City, Mexico,”erupted over seven times in 24 hours.”
This video reiterates many of the issues that I point out in Not by Fire but by Ice and Magnetic Reversals and Evolutionary Leaps.
For starters, how about starvation, plagues and collapse of empires?
Powerful explosive eruption at Ubinas volcano in Peru.
An intense earthquake swarm has been shaking the Mayotte region since May 2018, said BRGM, the France-based geological agency serving the territory.
Due to cover 70% of Earth’s habitable landmasses with ice sheets two miles thick.
It was an unusually large eruption, said Steve Saunders of the Rabaul Volcano Observatory (RVO). Ash falls were so heavy that trees broke under the weight, the RVO reported.
Could affect climate.
Experts warn that it could produce a Pompeii-size eruption leading to cooling and famine.(Huge volcanic eruptions have also occurred at or near the onset of previous little ice ages.)