In these pictures researchers work on the top of the 4,000ft Kilauea volcano. The shots were taken by local photographer G. Brad Lewis, 56, who said: 'Erupting volcanoes have always fascinated me.

One of the world's most active volcanoes has been spewing lava again. After a period of high activity, fountains of hot molten rock were seen spurting from the Kilauea volcano at Hawaii Volcanoes ...