Yes I agree, but I find it peculiar that I cannot do such a basic thing inside of Layout. I just wanted to make a quick check on paper to see if my document layout made sense before exporting it to PDF. Guess I can't...

Thanks anyway Dave R!

Where did you find these tutorials that show rotating the image in the Get Location window?

How about uploading an SKP file that shows the terrain turned as you describe. Are you sure you aren't just looking at it from 45°?