the story
2

Gryla is a very ugly woman.  She has three husbands. They gave her 65 sons.

Her favourite 13 sons are the sons of Leppaludi. Not a handsome creature either.

This rather loathsome couple wants to eat human children all the  time.

The 13 sons are often sent out to get human children and take them to their lair. A kind of Icelandic take-away.

Gryla only cooks when she feels like it. Sometimes there are hundreds of years between meals.

When she does, it is done with such energy that the mountains spit fire. Humans call it a vulcanic eruption.