They seem pretty worried about a tsunami in Iquique. This sign is down right next to the port, helpfully pointing inland rather than out to sea. There are signs all over the town too, letting you know if this particular corner would be under water or not. The area has regular earthquakes, and seeing as a lot of houses are built on sand, this is worrying. I asked a guy about building regulations and he looked at me like I was a bit simple.