Photograph

Maybe this picture could be normal for any person, or priceless, but for me it is a very important loop with our past. I don't know who took the picture, and it doesn't matter actually, the important it is what shows. The Santiago Subway, or Metro de Santiago, in 1975 one of the most important transport in Santiago sees the light. But, Why it's important that to me? In fact, its not the transport what it cares to me, it is the year when was token, 1975 specifically, the history of the transport, or the history of everything it's what matters to me. I choose the Subway because it's something we use daily, and i love to know the history of it. In conclusion, I am not referring to the photo itself , is the historical importance of each past photo that interests me . the important here is how it was, how was created, when, by who, and all those little clues which aproach me to have been there.