I’ve traveled extensively throughout mainland Italy over the past 20 years. I love the subtle and sometimes not-so-subtle differences in the regions from north to south and east to west. However, my trip to Sardinia this past November was my first encounter with the island. Italy’s second largest island after Sicily, Sardinia is best known for its beaches and emerald coast. I visited for a completely different reason. I was on a mission to see as much of the interior of the island as possible. In particular, I wanted to visit the villages that comprise the island’s “Blue Zone.” What …