From the tiny BlackBerry keyboard of Fenton Bailey:

A monsoon (’tis the season) derailed our plan to shoot in Locos Norte today, so instead we ended up taking shelter under a freeway. Then we noticed that jammed between the road and the railway were thousands of shacks, and servicing them were homemade railway sleds pushed by kids for a few pesos. So against all our better judgments we took one – and had a magical, amazing, and moving experience. Trains still run on these tracks, and one came along while we were filming – so we had to hop off pretty quickly.