Trek the volcanic island of Nea Kameni, walk earlier steaming vents, research geology out of your guide

https://cameron-hornbostel.com/oi-kalyteres-staseis-se-ena-tour-sti-santorini-o-apolytos-odigos-gia/

Trek the volcanic island of Nea Kameni, walk past steaming vents, read geology out of your consultant, and soak in local sulfur warm springs.