The 1991 eruption of Pinatubo sent ash over 21 miles into the air. It lowered global temps by about 1 degree.
It was the second largest in the 20th century. The largest was in Alaska in 1912.
Read a couple of articles over the years how the plague was worsen by a mini-ice age following increased volcanic activity. Rats moved closer to people.
Do climate change models take in account volcanic activities and sunspots and solar winds? How can they predict these?