I think the stone walls in this picture are a little too high and too perfect. I would lower them a bit...waist high on a player and maybe even raise the terrain a tad on each side to give it a mound type effect. The base of the walls...especially down by the palm trees...seems too flat and perfect.
Not complaining...just thought it might look a bit more real with some very minor adjustments.
Jaws it's the perspective. Don't worry the walls are fine and the Patch around the trees is actually a bit steeped. :)
That's actually a pretty good point, they do feel a little strange. I'd say they'd have to be a little wider.
Trust me. Ingame they look perfectly normal from the players perspective. You won't see them from this angle while playing.