This "Vision of Nocturnal Cataclysm" is a macro image of areas of rotating particles that represent the unfolding movements of layers of hot ash. These were recorded als 318 individual images during a focus stack series in 3-second intervals over a distance of 64 mm and a period of 20 minutes. The image series was recorded at steps of 0.2 mm  from nearmost focus to most distant. After having processed the image stack the luminosity of the resulting image was inverted and cropped. The resulting macro image represents a width of approximately 60 mm.
<a href="//commons.wikimedia.org/wiki/User:Franz_van_Duns" title="User:Franz van Duns">Franz van Duns</a>
CC BY-SA 4.0
<span class="int-own-work" lang="en">Own work</span>