Fig. 2: Morphological features of the SE caldera wall.
From: Morphological changes of the south-eastern wall of Askja caldera, Iceland over the past 80 years
a The orthophoto generated from 1987 aerial data (www.lmi.is). b The orthophoto generated from 2022 Plèiades data. The red arrow shows the supposed sliding direction of the intact block (obelisk). c, d Slope maps. Dotted rectangles outline the areas shown in Figs. 3, 4, and 6.
