Does the photograph below show the wrath of a Nordic god or a natural phenomenon? Maybe both. From the files of weird, wild, and magnificent Iceland comes this photograph by Skarphedinn Thrainsson:
The image was taken in April 2010, during the most recent eruption of Eyjafjallajokull, an Icelandic volcano covered by an ice cap. Volcanic lightning–also known as a “dirty thunderstorm”–occurs when static charges are produced by rock fragments and ice particles colliding with the ash in a volcanic cloud.