Picture in Mountains at Waterton Lakes.

Povray 3.5 used

I first created the mountains and exported this as an image, 
which is embedded in a height-field object and scaled appropriately. 
Mountains are done using a plane.

I added a lake using a bezier spline. 
This allowed a curvy shore line rather than a straight box or something.

A dark sky plane is behind a few stars/spheres and the moon. 
The stars use their own separate lighting so it wont interfere with the foreground picture. 
The moon and the rest of the picture takes one other main light source

Enjoy