Want to explore Italy where a flashlight or even hard hat is required? There are lots of options to go underground. Tuscany alone has 1,500 grottoes and 270 km of underground tunnels. Here are three of my favorite underground spots (only one requires a hard hat!), places I recommend often to clients, in no particular order....
1) Hike the Lagazuoi Tunnels in the Dolomite mountains (Northeastern Italy)
These tunnels were dug through the mountain by both Austrians and Italians during WWI and now provide an easy 1-2 hour hike in gorgeous scenery (photo above) near Cortina. Choose whether to walk through the tunnels going up or down, then take the cable car the other way. I recommend walking down unless it bothers your knees. Before starting the hike, rent helmets and flashlights next to the cable car station. Note: the restaurant at the top is excellent. Here's a great detailed account of the Lagazuoi hike.
2) Walk the Etruscan pathways of Pitigliano (Southern Tuscany)
For some reason I get along really well with Jewish people (though I don't usually find out they're Jewish until we've already gotten to know each other pretty well) which includes many of my clients. This means that I've spent quite a bit of time researching Jewish Italy (there's a lot there!), and I often end up recommending a visit to the Tuscan town of Pitigliano, also known as Little Jerusalem.
Not only is this gorgeous town historically significant in more ways than one, it has some very interesting walkable Etruscan pathways. Some of the tunnels are completely covered, and are underneath the city. They're accessible on walking tours - ask the tourist office. Other pathways, the Via Cave, are in the area around Pitigliano. Also carved by the ancient Etruscans and up to a mile long, they're narrow with tall vertical walls, open at the top. They don't go anywhere in particular but are fun to walk through. This article lists the Etruscan pathways around Pitigliano and provides a good description from the traveler's perspective. Here's an interesting article speculating on why the Pitigliano pathways were built.
3) Soak (or dive!) in the thermal waters, or just inhale the therapeutic steam of Grotta Giusti (Northern Tuscany)
There are many natural thermal waters in Tuscany, but Grotta Giusti is at the top of my list. It's an actual cave and natural sauna, even equipped with lounge chairs, as you can see from the photo above. Kids under age 12 can't go into the grotto but can visit the swimming pool, which is also filled with the natural thermal waters and is at ground-level (as opposed to cave-level). SCUBA divers can even explore the cave underwater.
Do you have any favorite underground spots in Italy?
Photo of Lagazuoi by Marco Bellucci, Photo of Pitigliano by Arielarts used with permission, Photo of Grotta Giusti from Grotta Giusti Spa
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