Grottes de Jonas, Troglodyte fortress in Saint-Pierre-Colamine, France.
The Grottes de Jonas consists of sixty cave dwellings carved into volcanic rock, including living quarters, storage areas, and a medieval castle complex.
Medieval inhabitants constructed these cave dwellings within a volcanic cliff during the 12th century, creating a complete underground village system.
The site's chapel contains preserved 11th-century frescoes and features a traditional bakery with an original bread oven carved into the rock.
Visitors need to climb 500 steps to explore the site, with guided tours available in French and self-guided options lasting approximately 60 minutes.
The fortress includes a spiral staircase carved directly into the volcanic rock, connecting multiple levels of the underground settlement.
Location: Saint-Pierre-Colamine
Address: Jonas, 63610 Saint-Pierre-Colamine, France 63610 Saint-Pierre-Colamine
Opening Hours: Saturday-Sunday 10:00-16:00
Phone: +33473561642
Website: http://jonastroglo.fr
GPS coordinates: 45.54237,2.99334
Latest update: June 23, 2025 09:44
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