Here is a pictures of the 1918 eruption at Katla volcano.
This is not the most famous pictures of the 1918 eruption in Katla. But they do tell a lot of story what we can expect next time Katla erupts.
Here is what we can expect in terms of ice that is going to come down with the flood from next Katla eruption.
There are two people on top of the glacier ice-bergs. Gives a idea of the scales in question.
Pictures are from various sources on the internet.