Le Grotte di Stiffe is a remarkable cave attraction in San Demetrio ne’ Vestini, in Italy’s Abruzzo region. Set within the Sirente Velino Regional Park, the caves are known for their geological features and for the underground Rio Gamberale, which resurfaces here after flowing beneath the mountains. Water remains a constant presence along the route, shaping a dramatic landscape of rapids, pools, waterfalls, stalactites and stalagmites.

Visitors can explore approximately 700 metres of underground passage on maintained walkways, accompanied by trained staff. Stairs, bridges and platforms help make the route accessible to a range of ages, while the standard visit takes about 50 to 60 minutes and is described as easy. The site also offers “Notti Magiche,” a separate tour lasting around 75 minutes, with moderate difficulty. Tickets are available from €10, and visitors can find practical information and book tours through the website. Recognised by the Abruzzo Region as a tourist heritage site, Le Grotte di Stiffe offers an engaging experience for nature lovers, geology enthusiasts and travellers discovering the region.