Best caves around Donostia/San Sebastián are found within a region characterized by diverse geological formations. The area, part of the Basque Country, features both coastal rock formations and inland cave systems. These natural features offer opportunities for exploration and provide insights into the area's natural history. The surrounding Gipuzkoa province also contains significant prehistoric and geological cave sites.
Last updated: May 14, 2026
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Popular around Donostia/San Sebastián
Through the Basque Country on shepherd's paths - Caminos de Transhumancia (GR 34)
Cycling along the Cantabrian coast – the Northern Way
From the coast to the mountains – Tour of the Basque Country
Between the sea and the mountains — GR 121: Tour of Guipúzcoa
Hiking around Donostia/San Sebastián
Running Trails around Donostia/San Sebastián
Road Cycling Routes around Donostia/San Sebastián
Cycling around Donostia/San Sebastián
MTB Trails around Donostia/San Sebastián

Gravel biking around Donostia/San Sebastián
The path branches off from the main trail and is unfortunately now completely overgrown.
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BEAUTIFUL TRAIL WITH ULIA CLIFFS
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Forest trail along the Karrika River. The trail passes through a small tunnel near Bidaita. The forested landscape is the perfect setting for any good hike.
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The Valley of Colors is an authentic open-air museum, where you will discover the magic that erosion can create over millions of years. In this magical place, you can enjoy numerous geoforms and a variety of colors in the rocks.
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One of the peaks of Peñas de Aia is home to the Junkal cave, a cavity that is the object of mountain celebrations.
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On the coastal path of the route to the cliffs of Mount Ulia in San Sebastian we come across the Peña de Ataloi, this strange and beautiful rock formation in the shape of a cave that melts in your hands.
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Taffonis du Jaizkebel: some explanations on their training: https://planet-terre.ens-lyon.fr/ressource/Img503-2015-08-31.xml
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You can't get here because the route no longer exists (slipped). Just follow the trail marker instead of komoot. At the end there is a great river where you can refresh yourself in the summer
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The region offers a diverse range of cave experiences. You can find impressive Paleolithic art replicas at Ekainberri, explore vast geological formations and paleontological sites at Arrikrutz Caves, or discover natural rock formations like Peña de Ataloi along coastal paths. There are also summit caves like the Junkal cave at Muganix Summit (758 m) and sandstone caves at Valley of Colors.
Yes, Ekainberri is particularly well-suited for families. It offers an immersive guided experience with reproductions of 14,000-year-old cave paintings and demonstrations of ancient fire-making and hunting techniques, making it engaging for all ages. The Valley of Colors also provides an accessible outdoor experience to observe unique geological formations.
The Ekainberri replica cave is a UNESCO World Heritage site, showcasing exceptionally well-preserved Paleolithic cave paintings from around 14,000 years ago, primarily depicting bison, horses, and deer. These provide a unique window into early human culture and art in the Basque Country.
The Arrikrutz Caves are renowned for their impressive geological formations, including numerous stalactites and stalagmites. The Valley of Colors features stunning sandstone caves with a variety of rock colors and geoforms created by millions of years of erosion. Peña de Ataloi is a unique natural rock formation on the coast.
Yes, the Arrikrutz Caves are a significant paleontological site. Guided tours through Gallery 53 allow visitors to see where remains of prehistoric animals such as cave bears, woolly rhinoceros, cave hyenas, giant deer, and even a complete skeleton of a cave lion have been discovered.
Yes, several trails offer cave-related features. The Peña de Ataloi is a scenic rock formation on the coastal path of Mount Ulia. The Karrika River Trail to Bidaita includes a small tunnel. For more hiking options, explore the Hiking around Donostia/San Sebastián guide.
Many caves are located within or near natural parks, offering opportunities for hiking and exploring the surrounding landscapes. For example, Arrikrutz Caves are in the Aizkorri-Aratz nature park. You can find various hiking routes in the area, including easy options like the Watchtower Route (GR 121) or the Northern Way. Check out the Hiking around Donostia/San Sebastián and Easy hikes around Donostia/San Sebastián guides for more ideas.
Ekainberri is located in Zestoa, about a 30-minute drive from Donostia-San Sebastián. Arrikrutz Caves are in Oñati, within the Aizkorri-Aratz nature park, also typically accessed by car. For specific public transport options, it's best to check local services for routes to Zestoa or Oñati, as direct routes to the cave entrances might be limited.
Caves maintain a consistent cool temperature year-round, so it's advisable to wear layers, even in summer. Comfortable walking shoes with good grip are essential, as surfaces can be uneven or damp. Some tours might require helmets, which are usually provided.
The Filón de San Joaquín Cave is categorized as challenging. It's important to note that access might be difficult due to terrain changes, and it's recommended to follow trail markers rather than relying solely on older route information. Always prioritize safety and check current conditions for challenging routes.
Visitors frequently appreciate the unique blend of natural beauty and historical significance. The stunning rock formations, the vibrant colors at the Valley of Colors, and the ancient art at Ekainberri are often highlighted. The opportunity to combine cave exploration with scenic coastal hikes or mountain trails also receives positive feedback.


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