Heston plays a tough, cynical treasure hunter filling in as a tourist guide. He is though keen to find a legendary Incan treasure and when an opportunity for a private plane to take him and his latest girl to Machu Picchu to seek this out he is not going to miss the opportunity.

You only have to look at Heston to see how this influenced Indiana Jones and there are also quite a few incidents picked up by Spielberg later. This is where the similarities end as the action relating to treasure hunting is pretty thin and for most of the film, it's just about the planning, travelling and avoiding the baddies. Heston is a real star though and carries this fun but unremarkable adventure with ease - frankly everyone else is neither here or there.

Nice to see singing legend Imma Sumac doing her amazing thing.

Point of interest - what exactly is Thomas Mitchell doing at the snooker table near the start of the film?