Serração (mountain mist)
Brazil’s own fog: the Atlantic Forest dissolving in planes, from Petrópolis to the Mantiqueira.

Serração is the mountain mist of the Brazilian highlands, from Petrópolis to the Serra da Mantiqueira, rising from the valleys and dissolving the Atlantic Forest in layers.
Unlike Nordic fog it is green, wet and alive: dense vegetation, varied tree heights, and mist that sits low in the valleys while the ridges stay visible.
The recipe
| HDRI | low overcast |
|---|---|
| Fog | height-based, denser in the valleys |
| Planes | 4 or 5, each lighter and cooler |
| Scatter | forest with variation in height and species |
| Post | Z-depth to reinforce the layers |
Starting points for Corona or V-Ray, not rules.
Step by step in 3D
- Light the scene with a low overcast HDRI and a weak or hidden sun.
- Use height-based fog: denser at valley level, thinner on the ridges.
- Build 4 or 5 depth planes of terrain and forest, each one lighter and cooler than the one in front.
- Scatter the forest with variation in height and species, so the silhouettes of the ridges read.
- Keep the building on a middle plane, partly veiled, so the mist passes in front of it.
Post-production
Use a Z-depth pass to push the layering and lift the farthest planes toward the value of the sky. Avoid adding contrast to the background.
Where to study it
Guignard, Salgado (Gênesis). The reference library says what to look at in each one.
A starting phrase
Serração, mid-morning, June. The wind moves the forest. 85 mm lens compressing the planes, the architecture small in a corner.
Write the moment before you model. Draw your own phrase in the Atmosphere Notebook, then check the render in the value study tool.