Trek the volcanic island of Nea Kameni, stroll past steaming vents, gain knowledge of geology from your manual

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

Trek the volcanic island of Nea Kameni, walk earlier steaming vents, study geology from your instruction manual, and soak in regional sulfur hot springs.