So we are planning 11 days in Italy in the winter, flying in and out of Milan.

Time spent in the north we will use public transportation and visit regional cities including Bologna, Genova, Ravenna, Verona, Venice and Florence.

We will drive south and see Naples, Pompeii and Herculaneum.

Any general travel advice, restaurant suggestions, cities we missed that can be reached via transit, sights to see, customs or whatever you think is useful would be most appreciated. Also I need to find a moderate priced hotel or hostel with private rooms for Milan. Thank you very much!

So, I have a casual interest, but I find them intriguing. I recently took a trip to Lassen National Park, and saw this boiling mud pool. https://imgur.com/n6dV92U. I am planning a trip next year to Pompeii and Herculaneum. Someday, I am interested in seeing volcanoes in Hawaii and Iceland and maybe more. I casually enjoyed HarryTurtledove's survival novels about Yellowstone erupting, although they are not great literature by any means.

What about you? Any cool experiences with volcanoes or bucket list plans that you would like to share? Do you know fun facts? Do we have any geologists in the room? Take this prompt in any direction you would like.