Trek the volcanic island of Nea Kameni, stroll earlier steaming vents, research geology from your handbook
https://lukasyqju778.yousher.com/santorini-day-tours-the-ultimate-guide-to-daily-departures-and-deals
Trek the volcanic island of Nea Kameni, stroll past steaming vents, be told geology from your manual, and soak in local sulfur hot springs.