Stonehenge Car Park Post Holes 3
Image by RiotGibbon

That is encouraging, as it means that it is possible the pine post holes could be used to locate midsummer, autumn, midwinter, and spring in the annual cycle of seasons. However I will try to obtain a precise position of the sunrise in late December – weather permitting, and take photos of the positions of the sunrise and the Stones.

Thanks for the info.

The calc shows that from all three post holes the sun would seen to rise over the monumnent with the westernmost post hole probably being the best bet for a view of the sunrise over the centre of the monument . That is taking the height of the stones into consideration ,we don't know what was there , if anything ,in the the period when the posts were erected .
Good luck with the pic(s) I look forward to it .