Trek the volcanic island of Nea Kameni, walk beyond steaming vents, be told geology out of your advisor
https://mylesnfuu159.quillnesty.com/posts/santorini-daily-tours-what-to-expect-and-how-to-choose
Trek the volcanic island of Nea Kameni, stroll prior steaming vents, learn geology out of your book, and soak in close by sulfur warm springs.