Shot on assignment for @natgeo Measured to be 5-10x more powerful than the previous eruption in 2021, the Meradalir eruption sits on a large base of magma as the fissure spits hot magma along a 1/4 mile stretch of land. Views from the air allow you to realize the magnitude of the volcanic activity and the fast impact it has on the already dynamic landscape in Iceland. The Volcanic Explosivity Index (VEI) measures the relative explosivity of historic eruptions - gauging volume of products, eruption cloud height, and qualitative observations.