Iceland's Eyjafjallajokull volcano is still spewing ash as scientists warn the explosions could trigger much greater eruptions from a nearby volcano, PRESS TV reported.
The volcano awoke in April with its first eruption in almost 200 years, driving hundreds of people temporarily from their homes in the area, 120 km (75 miles) east of Iceland's capital, Reykjavik.
A bigger eruption soon followed in mid-April which rattled the global economy by disrupting air traffic across Europe.
Thousands of planes across northern Europe were grounded for almost a week over fears that the silicate ash cloud damage jet engines. This stranded millions of passengers all over the world and inflicted USD 2 billion worth of damage on the international aviation industry.
Iceland itself did not immediately suffer flight cancellations as the winds blew the ash pall east toward Europe. Iceland's international airport stayed open until after the wind shifted direction.
Hot gases from the volcano, which lies beneath a glacier, however, melted the ice and sent torrents of water filled with ash sweeping down the steep slopes of the volcano.
The ongoing minor eruptions is said to pose no threat to air traffic but is feared to set off a much bigger volcano, posing a threat of some magnitude.
Iceland, with a population of 320,000 people, sits on a large volcanic hot spot in the Atlantic's mid-oceanic ridge, and has seen devastating eruptions over the years.