Long ago we heard rumors that the petroglyphs of Altavista – located 50 kilometers north of Puerto Vallarta as the Macaw flies – were a sight we had to see. Finally, one day in March, we decided to go visit the place, figuring that this time of year the humidity and the gnat count would be low while the temperature would be pleasant by day and cool at night: perfect ingredients for camping on the beach at the nearby pueblito of Chacala.