This scene is called Aiden's adventures.
It is a reworked version of my original DAZ 3DDeligth Render now in octane.
Here is the original : fav.me/d7kat20
I completly rework Lights, Colours and some materials. I did not change much on the scene itself except some repositioning of the hydras heads.
It costs me almost 3 full evenings to find my perfect balance beetween fog,volume,light and colour. Now it looks like it's meant to be