cool adventure! I like it a lot.
A little remark, though: I think it’d be better to include your introduction text (“It has been raining for two weeks non-stop. The locals say that the Pho Iva…”) in the PDF file. Today, I remember what’s the situation, but in a few weeks/months time, if I’m opening the PDF, I’m almost sure that I won’t know about the two-week rain. What do you think?