On our way to Nazca on the bus, a woman asked if she could put her bag under our seat. Steph said yes as she is so nice but I was immediately suspicious as it was a small leather bag and they had loads of much bigger granny bags (you know those multi-coloured plastic ones that look like old checked sacks and used the whole world over by grannies). My suspicion turned out to be correct because the bus was stopped and the police immediately headed upstairs and went through all the granny bags. They obviously had some kind of…