Landscape volumetrics

After following a Procedural Landscapes in Blender 2.80 tutorial (Wayward Art Company), I started to add some volumetric mist. It is a mix of using both Z depth data and an object with principled volume material. I used noise texture to drive density. Render time 150 min
Then I deleted volume object, rendered again, and added some clouds in Krita.
(i5, 4 GB Gforce MX150 laptop, 8 GB RAM)