Sunlit ridges against volcanic scree on Eyjafjallajökull, a volcano in Iceland

Sunlight sets Iceland's Eyjafjallajökull aglow

This is the sun-soaked ice cap of Iceland's Eyjafjallajökull. Remember the name? It's that unpronounceable volcano that caused the biggest disruption to air traffic since World War II. And this relatively small, but volatile island in the North Atlantic may yet waylay the world again: Eyjafjallajökull is a lightweight among the 32 active volcanic systems dotting the Land of Fire and Ice—its much larger neighbor Katla has been closely monitored since the 2010 incident.

Today, the Friday of winter's 13th week, is the first day of the old Icelandic month of Thorri and the beginning of Thorrablot, a quintessentially Icelandic celebration adapted from the country's pagan roots. Throughout the month, Icelanders will revel in traditional songs, poems, and oral history, while enjoying buffet-style platters of cleverly preserved foods from Iceland's hardscrabble past: rotten shark, boiled sheep's head, lamb's-blood pudding, and other dishes sure to raise non-Icelanders' eyebrows (and, perhaps, turn their stomachs).