Trek the volcanic island of Nea Kameni, walk earlier steaming vents, study geology out of your booklet
https://topnewhealthylifestyle.org/santorini-day-tour-the-perfect-one-day-itinerary-for-views-villages/
Trek the volcanic island of Nea Kameni, walk beyond steaming vents, gain knowledge of geology out of your aid, and soak in neighborhood sulfur hot springs.