Eyjafjallajokull (Árni Friðriksson) Published September 20, 2013 at 800 × 600 in Turning depth to time using tephra: a cautionary note? ← Previous Eyjafjallajokull, Iceland in 2010. Photo credit: Árni Friðriksson via Wikimedia Commons. Eyjafjallajokull (Árni Friðriksson)