Trek the volcanic island of Nea Kameni, stroll past steaming vents, be told geology out of your publication
https://pmar.gr/santorini-tours-the-best-routes-stops-and-itineraries-on-the-island/
Trek the volcanic island of Nea Kameni, walk past steaming vents, read geology from your e-book, and soak in within reach sulfur hot springs.