Photos: Volcanoes erupt in Papua New Guinea and Iceland

Smoke billows from Mt. Tavurvur after an eruption in Kokopo, east New Britain, Papua New Guinea.  (Jason Tassell / Associated Press)

Mt. Tavurvur erupts in eastern Papua New Guinea, spewing rocks and ash into the air.  (Joyce Lessimanuaja / AFP/Getty Images)

Smoke billows from Mt. Tavurvu in Kokopo, east New Britain, Papua New Guinea on Friday.  (Jason Tassell / Associated Press)

A file photo taken on Oct. 7, 2006, shows evacuated Matapit Islanders watching the Mt. Tavurvur volcano erupt over the city of Rabaul in Papua New Guinea. Mt. Tavurvur has erupted again, forcing the evacuation of local communities.  (Bruce Alexander / AFP/Getty Images)

A file photo taken on Sept. 22, 1994, shows Rabaul residents on a hill overlooking Simpson Harbour watching the devastating volcanic eruptions of Mt. Tavurvur and Mt. Vulcan, which destroyed much of their city. Mt Tavurvur erupted again on Friday.  (Torsten Blackwood / AFP/Getty Images)