Jonathan Franklin

In Peru, awareness of fake currency is so high that retail shops regularly provide cashiers with hole punchers. When a fake bill is received, the cashier quickly pops out a few holes before curtly returning the bill to an oft-surprised client.

I wrote '33 Men' in eight weeks. Not only was it a combination of simultaneously writing and interviewing, but as I dug deeper into the miners' story, I found the key to their success was the ability to place their individuality on the back burner and bring forward the sense of a collective group responsibility.

There are people who travel because they want to push themselves to physical limits, people who walk across deserts or cycle across the Antarctic - like Ranulph Fiennes, who just does it because it's there. And then there are people like me, who are just genuinely curious about the world.