I’ve done this render quite some time ago with 2.79. I want to recreate it with 2.80 and my new knowledge, but unfortunately there’s a bug with particles not following displacement. Whole particle system is going to be rewritten so I’ll wait I guess.
Non hdri lightning. The background here is just image plate. And it’s lightning is reversed xP (clouds shadows are on the opossite)
Noise: render took 19 hours if I recall correctly, but heterogenous volume scattering is terrible to render.
Also, there was no multiple importance on volume back then.
Materials: those medium bushes there have no principled shader. They look terrible.
Aroud 6-7 million particles here.
And also a version with fog in the way I wanted it, but people hated it: