Arriving at the Panama border crossing (after a typical 6 hour bus journey) we got our exit stamps from Costa Rica and then proceeded to enter Panama. To do this you have to cross over a dodgy old railway bridge, with large gaps between the planks requiring a level of coordination that is hard to maintain after a long early morning bus journey. The border guards demanded to see and onward or return ticket, this is the first time this has happened and luckly we b...