A disused copper mine closed in 1946 became the ideal natural aging environment when the Cooperativa Produttori Latte e Fontina discovered its constant 10°C temperature and 90% humidity. Today, 60,000 Fontina wheels sleep in rock tunnels at the Centro Visitatori Fontina (Frazione Frissonière), aging on spruce pine planks for a minimum of 80 days. Each wheel weighs ~9 kg and was made from raw milk of a SINGLE milking of Valdostana cows — no blending milkings, no pasteurisation. The tour descends into carved rock tunnels where you walk past thousands of wheels in the dark, damp mountain air. Entry €5/person, guided tours Mon–Fri at 10:00, book 24 hours ahead via +39 016573309. Buy both standard and Alpeggio Fontina versions at the shop — taste them side by side.
🔄 BACKUP: If guided tours are unavailable, the shop at the visitor centre sells both Fontina versions. Check fontina-dop.it/en/visit for current booking details.