Ecuador's Tungurahua volcano

Ash rises from Ecuador's Tunguharua volcano, south of Quito July 15, 2006. Ecuador's Tungurahua volcano spewed ash, gases and molten rocks on Friday, forcing authorities to evacuate four nearby villages after the crater registered its most volatile activity since a 1999 eruption. (Xinhua/Reuters Photo)

Ash rises from Ecuador's Tunguharua volcano, south of Quito July 15, 2006. Ecuador's Tungurahua volcano spewed ash, gases and molten rocks on Friday, forcing authorities to evacuate four nearby villages after the crater registered its most volatile activity since a 1999 eruption. (Xinhua/Reuters Photo)

A woman carries a gas tank on her back as she evacuates from Cusua, a village near the Tunguharua volcano,south of Quito July 15, 2006. Ecuador's Tungurahua volcano spewed ash, gases and molten rocks on Friday, forcing authorities to evacuate four nearby villages after the crater registered its most volatile activity since a 1999 eruption. (Xinhua/Reuters Photo)

A handicapped woman is carried by a rescue police squad to be evacuated from Cusua, a village near the Tunguharua volcano,south of Quito July 15, 2006. Ecuador's Tungurahua volcano spewed ash, gases and molten rocks on Friday, forcing authorities to evacuate four nearby villages after the crater registered its most volatile activity since a 1999 eruption. (Xinhua/ReutersPhoto)