Rays emanating from a point on the surface I am trying to create an effect in cycles (like the attached photo), where points on the surface emit rays (like god-rays). I have tried adding a spot light at the location where I want this, along with a principled volume to the world (setting the density to ~0.1). However, the whole scene becomes foggy and the effect is not really produced.
Can someone please show me a way to create this (just the rays)?
You could use a simple box for the volume with the following texture: