Trek the volcanic island of Nea Kameni, walk previous steaming vents, research geology out of your guide
https://reiddtcp330.cavandoragh.org/family-friendly-santorini-island-tours-easy-itineraries-with-kids-2
Trek the volcanic island of Nea Kameni, walk past steaming vents, read geology from your booklet, and soak in local sulfur warm springs.