Part 12 of my Peru & Bolivia report tells about the last leg of my journey, from Arequipa back to Lima along the Peruvian coast. Along the way I flew over the famous Nazca lines and visited the Nazca necropolis, went sandboarding (snowboaring on sand) in the oasis Huacachina, and saw lots of wildlife (sea lions, penguins and millions of birds) during a boat tour to the Islas Ballestas.