Visited this afternoon (12 November 2006). You need to have seen the DEFRA Magic map (see link above) to make sense of the site, otherwise it is just a field and you are not sure you are there (no signs). There is a small mound the size of a baseball pitcher's in the field east of the masts.
Access from the A21 is difficult - you cannot park on this busy trunk road. You can walk in from the back, though bits were muddy and it takes nearly an hour on the rights of way.
The walk in is just as good as arriving since you find isolation in the middle of a busy and populated area, starling green woodpeckers on the way and only meeting one other person. Once at the fort you need your imagination - this is no Maiden Castle.
Something is not right. This message is just to keep things from messing up down the road