Trek the volcanic island of Nea Kameni, walk past steaming vents, examine geology from your e-book

https://holdenbnaj140.novacrestiq.com/posts/santorini-daily-tours-what-to-expect-and-how-to-choose

Trek the volcanic island of Nea Kameni, walk prior steaming vents, learn geology from your book, and soak in nearby sulfur warm springs.