Cratering of ice sheet and possible small eruption under ice.
click to embiggen
Crater in ice over one of sites of the 1918 eruption – four of these formed overnight.
Lot of shallow quakes still in a line across the caldera – some might be ice-surface cracking, others are several km deep. Could be magma pushing into a fissure, angle is consistent with the general orientation of the mid-atlantic rift through there.
Be quite spectacular if that whole line ruptures though.
Nice picture gallery at visir.is
Video of flood here (ruv 32 bit wmv) – can’t get it to load right now, slashdotted
Nice perspective along Múlakvísl
TV report with heli footage of bridge and road outage – gonna be tough to fix this one.