In the past, those who have photographed the world's underground railways systems have borne witness to some of the most honest and unposed snapshots of everyday life. Metro networks are a melting pot of people and emotions, and that's what we want to see in your photos. For some inspiration on how to capture those shots, here's an interview with award-winning photographer Stan Raucher on Amateur Photographer.
Winners and highly commended finishers will gain exposure across Photocrowd's social media channels and on the 'Best images' page.
Every photo submitted will be available for the crowd to rate once the submissions period has ended. You can see all the images uploaded to a contest, but will need to rate them to see how they’re ranked once the rating period begins.
Some contests on Photocrowd also have a judge. After the submission period closes the judge chooses their favourite images and writes some image reviews. The crowd and judge results will be announced on the same day.
For a more detailed explanation of how rating works, see our FAQs