It wasn’t easy to find, however. “I had no idea if it was still around, in my photographs I didn’t have the name of the station,” says Wolf. He hired a researcher, who found the subway line based on details on the doors. “All the subway lines belong to different companies, and each one has its unique decal. She said ‘oh, that’s the Odakyu line’ – and then I flew to Tokyo and took the Odakyu line and at every station I got out and eventually I found it.”

Wolf returned to Shimo-Kitazawa station every year between 2010 and 2013. “I went there four years in a row, I went every year for four weeks, and every time I somehow came back with some more intense images,” he says. “I went there every morning from 7.45 until 8.50, which is peak rush hour, and every 80 seconds a train comes in. I would have 30 seconds to photograph before the train moved again.”