hi kliton77, stephen, paul and hanskoot!, many thanks all for comments!
paul, i hear you mate, your friendly honesty is always well received!, in fact i think the forum is back on track!

. i always love it when you scrutinize my pics, you keep seeing stuff that i've missed (so please keep scrutinizing!

).............in this pic i think you are maybe refering to the dark line along the horizon? (it looks like a bad blend), when i was processing it i wondered the same.
this dark line is actully grass.
i hope these 2 pics explain the reason?, this first one is from behind the tree, the brisk wind has exposed all the grass, the area below is out of the wind so is untouched.
the second is a 100% crop from the original (far left)


but to be fair my pp (heavily increased contrast) has probbly made things look unnatural?
hanskoot........i hear yo too

, yes i think my signature is way over the top