Trek the volcanic island of Nea Kameni, stroll past steaming vents, be trained geology out of your manual

https://bloggertips.gr/santorini-guided-tours-how-to-choose-the-right-experience-for-your-trip/

Trek the volcanic island of Nea Kameni, stroll beyond steaming vents, study geology out of your book, and soak in nearby sulfur scorching springs.