Trek the volcanic island of Nea Kameni, stroll past steaming vents, study geology out of your advisor
https://dailyfucks.gr/santorini-tours-the-best-ways-to-see-the-island-without-missing/
Trek the volcanic island of Nea Kameni, stroll prior steaming vents, read geology from your e-book, and soak in close by sulfur warm springs.