Originally Posted by HGMonaro 
some are most likely composities... didn't look too closely but the colour and B&W versions of the hills with road weaving up seem to have different skys. However nice to look at.
No, there are two different shots. There's the one on the front page gallery - completely different photograph. Inside the B&W gallery there's a black and white rendition of the color one on the gallery:
Maciej Duczynski photography - lonelywolf, forografia HDR, high dynamic range
but it's the same photograph as the color one:
Maciej Duczynski photography - lonelywolf, forografia HDR, high dynamic range
I think what's fooling you is that the black and white right next to the color thumbnail looks similar, but it's not the same at all.