SEAMLESS Space to Ground Transition

It's time to create something few studios can pull off: a seamless space to ground transition. (Yes it's very simplistic, but we'll build from here to heights no one has yet achieved!)
I will do what I must. Will you? / @danplusplus
RESOURCES
FastNoise: github.com/Aub...
Triplanar Mapping Video: • Triplanar Mapping Deep...
Atmospheres (THESE ARE INSANE!): github.com/Dim...