A Fourth Mesolithic Post Hole in The Stonehenge Car Park? Updated.

I have updated an earlier blog post - https://www.sarsen.org/2016/07/a-fourth-mesolithic-post-hole-in.html - about a possible unrecorded Mesolithic posthole I noticed during trenching in the old Stonehenge Carpark.  The trench was dug into undisturbed land and I haven't ever been able to find out what archaeological oversight there was or what was recorded. The feature was in line with the other postholes and of similar size and appearance. More at the linked blog post.