Taken 31st December 2002: This shot shows the north west corner of the enclosure, where there's a possible secondary entrance.
I took the photo to show the BMX track that has been made here. In case you can't make it out, there are three rows of ditches and obstacles in the foreground (including a sofa). I'm not sure how much damage has been done by this little bit of random digging, but it can't be good for a site to have people cutting chunks out of it.
Image credit: Simon Marshall