Pastscape - Detailed Result: MONUMENT NO. 224607
If you can imagine Woodhenge without any concrete posts or The Sanctuary without any blocks, then you can image this site.
More on The Modern Antiquarian
Stunning location and surroundings. There is lots of car parking just to the south of it through a magnificent belt of beech trees. But it is on MOD land so just make sure it is OK to visit when you go there.