Cueva de Chaves

Cueva de Chaves is an archaeological cave near Casbas de Huesca (Casbas de Uesca), in the province of Huesca, Aragón, at the foot of the Sierra de Guara, close to the small village of Bastarás. It ranks among the most significant Neolithic sites on the Iberian Peninsula, second in importance only to the Cova de l'Or in Alicante, according to specialists in Iberian prehistory.

Why does this cave matter to archaeologists?

Excavations that began in 1975 uncovered nearly 15,000 years of intermittent human presence, spanning the Upper Solutrean, the Upper and Final Magdalenian, and later the Neolithic. It's the Neolithic layer that draws the most attention: material dated to roughly 7,500 years ago documents some of the earliest farming and herding communities on the Iberian Peninsula, capturing the shift from hunting and gathering toward settled agricultural life. The site also forms part of the Mediterranean Basin rock art ensemble on the Iberian Peninsula, inscribed on the UNESCO World Heritage List in 1998.

What happened to the cave in 2007?

The site's history took a dark turn in 2007, when the landowner allowed heavy machinery onto the property, causing damage that turned part of the cave into a watering trough for livestock. At that point archaeologists had studied only around 10 percent of the deposit; much of the Neolithic material was destroyed or dumped into a nearby ravine, leaving mainly Palaeolithic remains intact. The case ended up in the courts, and Aragón's heritage authorities spent years pursuing legal action to restore access to a site that had been largely off-limits due to private ownership disputes.

Can visitors go inside today?

Yes. After roughly two decades of restricted access, Cueva de Chaves has reopened to the public through organized guided visits led by archaeologists on a recurring basis. Several dozen visitors have already toured the cave since access resumed, making it a rare chance to see a site that was closed to the wider public for so long, and that now plays a role in explaining the prehistory of the Huesca region to visitors.

Where can I see finds from the cave?

Some of the objects recovered from Cueva de Chaves, including a ceramic vessel, are held at the Museo de Huesca in the provincial capital. The cave itself sits within the limestone landscape of the Sierra de Guara, an area known for its gorges and canyons, which makes Casbas de Huesca a good base for combining prehistoric heritage with the natural scenery of the Pre-Pyrenees.

Frequently Asked Questions

Where exactly is Cueva de Chaves located? In the municipality of Casbas de Huesca, in the province of Huesca, Aragón, near the village of Bastarás, at the foot of the Sierra de Guara.

Why is the site considered so important? It preserves nearly 15,000 years of occupation, and its Neolithic layer, dated to about 7,500 years ago, is among the earliest evidence of farming and herding communities on the Iberian Peninsula, ranking second only to Cova de l'Or in overall significance.

What happened to the cave in 2007? The landowner allowed excavation works that partially destroyed the deposit, turning it into a livestock watering point; only about 10 percent of the site had been studied by then.

Is it possible to visit Cueva de Chaves now? Yes, guided visits accompanied by archaeologists have resumed after years of restricted access, though visiting arrangements remain regulated and worth checking in advance.