Buraca das Choias

Buraca das Choias is a karst cave right next to the village of Visuña, in the municipality of Folgoso do Courel, in the province of Lugo, deep in the Serra do Courel mountain range in Galicia, Spain. It's a lesser-known but genuinely striking underground site, mostly on the radar of cavers and nature enthusiasts, though its opening stretch can be visited by regular travelers too.

Where exactly is the cave?

The entrance sits within the limestone of the Vegadeo formation, the same rock that shapes much of the wider Courel area. Near the village of Seara, not far away, you can still find the remains of an old iron mine, and close by are the As Forgas springs, known for their iron-rich mineral water. The whole area falls within a UNESCO-recognized geopark, a sign of just how distinctive the local geology is.

What will you see inside?

The cave opens with an impressively tall entrance chamber — the vault here rises more than 10 metres. The section that's walkable without diving gear runs for over 290 metres through four connected galleries. Along the way there's a lake crossing the path and a dry chamber nicknamed "the Museum" by explorers, named for the dense cluster of stalactite formations found there. An underground stream runs through the whole system, with a flow of roughly 25 litres per second — enough to make this one of the more active caves in the region.

What's visible on foot is only part of the story. Beyond it, the cave continues underwater, and reaching those sections requires cave-diving equipment. For decades, various speleology and diving groups tried and failed to get past a narrow, flooded passage barely half a metre high with a steep incline. That changed in 2017, when divers from the Geoceanic club finally broke through. Cave divers Rafael Jurado and Manuel de las Heras later pushed through ten further flooded passages, reaching parts of the cave no one had ever seen before. The breakthrough is now considered one of the most significant moments in Galician speleology over the past four decades.

How do you get there?

Buraca das Choias sits near the village of Visuña, within the Folgoso do Courel municipality. This is mountain country, with the winding roads, terraced hillsides, and small stone villages typical of the Serra do Courel. The practical approach is to drive as close to Visuña as the road allows and continue on foot to the cave entrance. Anything beyond the walkable section — the flooded galleries — is strictly the domain of organized, equipped cave-diving groups, not casual visitors.

When should you visit?

Serra do Courel has clearly marked seasons, with cold, occasionally snowy winters and warmer summers. Inside the cave, temperatures stay fairly constant regardless of the weather outside, but getting there and exploring the surrounding trails is more comfortable in spring or autumn, when paths aren't muddy from heavy rain and the heat doesn't make the walk harder than it needs to be.

Frequently Asked Questions

Can you visit the cave on your own? The first 290-plus metres are accessible without technical equipment, but the rocks are damp and can be slippery, and there's no lighting inside. It's worth bringing a torch and, ideally, going with someone already familiar with the route.

What is there to see inside Buraca das Choias? Four connected galleries, an underground stream, a lake along the way, and the "Museum" chamber, filled with stalactite formations. The flooded sections beyond that were only reached for the first time in 2017, by cave divers.

Is there anything else worth seeing nearby? Yes — close to the village of Seara you'll find the remains of an old iron mine, and a little further on, the As Forgas springs, known for their iron-rich water.

Is the cave safe to visit? The walkable entrance section is reasonably safe for careful visitors, but the flooded galleries beyond it demand professional cave-diving experience and should never be attempted without proper training and equipment.