Shed Door

I've noticed up here that this is a common way of keeping a door closed. I presume it means it is easy to open from the outside, but not from the inside, therefore a good way of closing a byre or shed that animals are kept in.

Seems to be busy just now, so apologies for my lack of commenting - hope to catch up over the next few days. Thanks for all the super comments yesterday, I will definitely go back and take more shots.