Bryce 7 Pro.
Render Regular AA, time 46 hour 46 minutes.
In the scene a four cloned bryce trees, two terrains and one plane. Houses are made of primitives. The scene is illuminated only bryce sky HDRI. Sunlight is disabled. Clouds are excluded from the HDRI. Only the volumetric clouds are included in Distant Lights. Pseudo SSS a foliage material.