The caldera that formed upon Öræfajökull has deepened by around 20 metres according to experts. The situation was described as "far from normal" by volcanologist Ármann Höskuldsson.
The Geological Institute at the University of Iceland released 3D images showing that the caldera had deepened by 20 meters and that since first being spotted the crevasses have enlarged.
The 3D images were formed using Morgunblaðið photographer Ragnar Axelsson photo's after he flew over the glacier on November 19th and 28th.
Ingibjörg Jónsdóttir told Morgunblaðið that "We see a greatly increased pattern of fissures around the caldera. It's now more of a drop shape than a circle, lengthening towards the South West".
(Photo credit: Iceland monitor)