As I was wandering around the solar furnace at Odeillo, I got talking to an old lady who was doing a 'petit tour' for her health. When she saw I was taking photos she mentioned that she had seen an interesting old door that I might like to shoot, and so we went looking for it. However, she had forgotten where it was, so we gave up and I left her at Font Romeu train station. Walking back to Odeilla from the level crossing, I saw this, which I assume was the door she had in mind.