Grotte de La Verna, Sainte-Engrace

#3 of 9 in Nature in Basque Country
Gape at the size of Grotte de La Verna, a capacious 4 hectare (12 acre) cavern in one of the largest cave systems in the world, extending 250 m (820 ft) wide and 190 m (623 ft) high. It's part of the Pierre Saint-Martin massif, which features 2,000 chasms--including a dozen or so reputed to be among the largest in the world. The site also features 380 km (236 mi) of underground explored cave systems and 13 major rivers. Today you can take a guided tour or hike into the world's tenth-largest cavern on your own via an access tunnel made for an underground hydroelectric plant. Dress warmly, as temperatures are cool underground. With our online itinerary creator, Sainte-Engrace attractions like Grotte de La Verna can be center stage of your vacation plans, and you can find out about other attractions like it, unlike it, near it, and miles away.
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Grotte de La Verna Reviews
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179 reviews
  • Magnificent cave with wonderful surprises, everything is great, but it's cold, don't forget your wool, small and large... Very nice with a great guide, very teacher, we were with kids from 9 to 3 years, they are feasted themselves. See without hesitation.
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  • What a surprise!!! One of the most beautiful discoveries! Marco our guide was outstanding and guided us with passion and pedagogy at the heart of the largest underground room in the world. Everything is wonderful, how to find the area of this place is also wonderful. We definitely make a visit more long thanks!
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  • We did this by a chilly day. The long walk in the tunnel is already an experience as you are inside the mountain. Once inside it is pretty hard to really realize how big it is as it is so huge. But th...  more »

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