See the highlights of santorini on a 5 hour shore excursion and explore the island from its half submerged volcanic caldera to the summit of its highest mountain with a private guide at your side learn about santorinis volcanic history while visiting the caldera then travel through the mountains to a monastery and sample local produce made by the resident monks try wine at a volcanic vineyard and winery and then round off your day with free time in picturesque oia village before returnin