Researchers are not sure for how long Eyjafjallajokull, the Iceland volcano will continue its eruption. Since people can’t travel by air, there has been a mad rush to book train tickets now.Eyjafjallajokull glacier went on for six months at a stretch. That eruption also caused a glacial lake to outburst, thus resulting in a flood. Researchers are also worried about the Katla volcano which is situated almost 16 kms away from Eyjafjallajokull.It has been observed that both the volcanoes erupted together in 1612 and again from 1821 to 1823. Watch Passengers (2016)