Trek the volcanic island of Nea Kameni, walk previous steaming vents, be trained geology out of your instruction
https://megalopoli-fm.gr/unforgettable-santorini-tours-a-complete-guide-for-every-traveler/
Trek the volcanic island of Nea Kameni, stroll prior steaming vents, be taught geology from your e-book, and soak in regional sulfur hot springs.