See inside the factory in India that makes NYC’s manhole covers

We walk over countless manhole covers every day in New York, but you probably have no idea just how far they've traveled to get to the bottom of your shoe. Filmmaker Natasha Raheja explored the factories in Howrah, India where the ubiquitous covers are made in her film Cast In India.

The fascinating documentary was recently selected to be featured in National Geographic’s Short Film Showcase. If you’re interested in seeing more, you can purchase the full-length version of the film here.