Vatnajökull (meaning Glacier of Rivers), also known as the Vatna Glacier, is the largest and most voluminous Icelandic glacier, and one of the largest in area in Europe. It is located in the south-east of the island, covering more than 8 percent of the country.
Participants wear traditional clogs as shepherds lead their sheep through the center of Madrid, October 28, 2012. (Photo by Andres Kudacki/Associated Press)