YOU CAN'T EAT SAND, CAN YOU?

As we clatter down a Lucknow alley in a tuk-tuk we're hit by a smell of excrement and come upon a little lake of filth filled with dozen of happy pigs. In the street two pigs race to get a piece of fetid cardboard. And then a few feet further on we see a pig eating from a pile of... sand! He has a great big piggy grin since he has the pile all to himself.