Stonehenge Summer Solstice Sunset Alignment

(Click to enlarge)

Thanks to Simon Banton for these two shots of the sunset at Stonehenge on 19/06/2013. They are taken along the flat south western side of Stone 56, over Station Stone 93.

My theory that the Great Trilithon, which 56 is the only remaining standing part of, was aligned across its width towards the Winter Solstice Sunrise also means it should be aligned towards the Summer Solstice Sunset.

I'm reminded that 4500 years ago the Sun would be 62' of arc further to the right, and it seems the sun is still above the trees in this picture taken a couple of days before the solstice and so it is not an exact fit; but is it close enough to be significant?