The mystery of the small door

Once upon a time there were some little people who lived in the Bishop's Palace Gardens. They had their own small, secret door, leading from the Gardens to the Palace ....

But where have the small people gone? Why can't they use the door anymore?

Through the window you can see that the door has been bricked up. And one of the saddest things is that its been blocked up with breeze blocks, what a sin ... its such a fabulous old wall.