On the underground people are forced to stay in a tight space next to each other, and, even though it's only for a short time, they share unique experiences that will vanish forever once they leave. Sometimes they withdraw into a mental space that connects them to a place outside, maybe where they were only five minutes before or where they are heading, or an imaginary place where they feel safe and protected. A few search for absent glances, looking for improbable contacts, others talk to their traveling partners without a care for who might be watching or listening.
I have visually disconnected passengers from the physical space they are immersed in, highlighting details that belong exclusively to their intimate dimension.
