I'll see if I can dig some up, could be fun! At the time it wasn't possible to fly to Riohacha so we had to take a bus that got stuck. A bottle of whiskey that someone had, arranged for a Bulldozer to pull the Bus free. I hear that the border regions with Venezuela are still a risky proposition so be careful. Used to be that Venezuela was relatively safe and Colombia wasn't; now it's the other way around, but borders remain troublesome.