Join a geology-centred travel explaining eruptions, layered cliffs, and pumice landscapes

https://beaulluh376.rivetgarden.com/posts/how-to-find-a-tour-on-santorini-insider-tips-for-the-best-santorini-tours-4

Join a geology-focused tour explaining eruptions, layered cliffs, and pumice landscapes, with stops at viewpoints and the volcano.