How do I increase the render distance of things like trees and rocks in a biome?

[Hellbourne]

Hi,
 
I cannot seem to figure this out.. adjusting the camera culling script does nothing when scene camera and player camera are ticked... The trees only render about 150-200 metres infront of the camera, Previous maps outside of gaia I was easily pushing 500 metres, any help would very much be appreciated. Currently I look out into a paddock and you see nothing but hills no trees are rendered.

 

 

 

[Bryan]