# Fog in Valley

## Scene Characterisation

| Property | Value |
|----------|-------|
| Domain | SKY |
| Description | Low-lying fog filling a valley or over water. Progressive visibility loss.... |

## Key Tests
Exponential height fog, density gradient, sun scattering through fog, volumetric

## Brain Config
```bash
python -m brain \
    --reference benchmark/references/weather/fog-valley/pexels-1367192-fog-valley.jpg \
    --domain SKY \
    --llm claude --tier opus \
    --max-iterations 20
```

## Licensing
- **Category**: stock-free
- **License**: Pexels License (free for all purposes, no attribution required)
- **Source**: https://www.pexels.com/photo/1367192/
- **Photo ID**: 1367192
- **Attribution Required**: No