Hello,
This is my PURE entry “ark”
Cycles 512s. Unfortunatelly I was forced to render clouds with 128s and add them in Gimp later due to render times. Otherwise they would look better like here: Hills - Blender 2.81 Cycles - #5 by 3dnotguru. The glow around the sun was added in Gimp too. Everything else is blendered.
BTW Anyone knows why volumetric atmosphere in huge box renders 100x times faster than little cloud?