Thornborough Henge South

‘Visited’ 24.9.10
Despite my best efforts I couldn’t find this Henge. I searched up and down but could see no sign of it. I know I was in the right place but unless I saw it without realising, I missed it. Perhaps it has been ploughed away to nothing or perhaps the wind blowing so strongly that it made my eyes water was the problem? There was minimal vegetation in the fields so I don’t think that was the problem. Either way, I hope you have better luck than me! I did see a hare and lots of grouse.