[Oldexpat]

Krakatoa was responsible. Between Java and Sumatra. It is neat flying at night along the Indonesian island chain...you can see the glow of one volcano after another as you fly along.
This sounds a bit smaller and may not have an impact on the global climate.

[Ruy Dias de Bivar]

Krakatoa was responsible.

Krakatoa Katy, She ain’t no lady,
when she starts to shake her sarong,
Now Katys out in full array
For Mighty Mouse has saved the day,
for Kathy, Kathy, Krakatoa Katy.

[Kozak]

Nope. It was Tambora.

http://en.wikipedia.org/wiki/Year_Without_a_Summer

Krakatoa erupted in 1883.

[Kozak]

And the Toba supervolcano eruption about 60000 years ago nearly caused the extinction of the human race...

[hoosiermama]

I’m envious but I did get a helicopter ride down inside the crown of the most active vulcanoe on the big island -— the day the tsunami hit. Once in a lifetime!