Forats del Queixigar

Forats del Queixigar is a cave system in the municipality of Sant Esteve de la Sarga, in the Pallars Jussà region of Catalonia, Spain.

What is this place?

The Catalan name translates roughly to "the holes of Queixigar," referring to a set of openings that lead into an underground system carved by the Queixigar stream. The site sits at around 1,320 metres above sea level, on the western edge of the Montsec d'Ares mountain range, close to the village of Alsamora, which falls administratively under Sant Esteve de la Sarga.

The entrances open onto a rock face at a spot where the Queixigar stream bends sharply, almost at a right angle — a classic sign of karst erosion typical of the limestone massifs in the Pre-Pyrenees. The surrounding area holds other well-known speleological sites: Cova de la Colomera lies to the southeast, and Graller de les Comarques to the north. This stretch of Montsec d'Ares is riddled with caves, sinkholes and underground watercourses, the product of thousands of years of water slowly dissolving channels through the limestone.

How to get there?

Alsamora village is the usual starting point, with trails leading further into the Montsec d'Ares massif. Driving in means following local roads through the Pallars Jussà region, with Tremp as the nearest town of any size. Because the terrain is mountainous and poorly signposted, reaching the openings themselves generally involves hiking along marked paths or off-trail alongside the Queixigar streambed — a topographic map or GPS coordinates are worth carrying, since there is little on-site signage.

What should you know before visiting?

Forats del Queixigar is a speleological site, not a lit, walkway-equipped show cave. Going into the system itself calls for caving gear — helmet, headlamp, sometimes rope — and ideally a companion familiar with the local karst or an organised caving group; entering the passages casually without preparation is genuinely risky. For most visitors, the point of the trip is the approach itself: the rock face pierced by the openings, the stream's sharp bend, and the raw, stony scenery of Montsec d'Ares.

The wider Montsec massif is also one of the darkest-sky areas in Europe, holding Starlight Reserve status, which makes the surrounding ridges a popular target for stargazing and astrotourism after dark.

When to visit?

Spring and autumn bring the most comfortable conditions, with moderate mountain temperatures and lower water levels in the Queixigar stream than during snowmelt or after heavy rain — the streambed can become difficult to follow when water is running high. Summer midday heat in this part of the Pre-Pyrenees can be intense, so an early start is worth planning for. In winter, the altitude and exposure of the approach can bring snow and icy patches.

Frequently asked questions

Can you visit Forats del Queixigar without caving experience? Reaching the entrances on foot is possible for most hikers, but exploring the cave system itself requires caving equipment and ideally an experienced guide — this is not a show cave set up for casual visits.

Where exactly is Forats del Queixigar located? In the municipality of Sant Esteve de la Sarga, Pallars Jussà region, on the western edge of the Montsec d'Ares range near the village of Alsamora, at roughly 1,320 metres above sea level.

Are there other caves nearby? Yes — the Montsec d'Ares area is dense with karst features, including Cova de la Colomera to the southeast and Graller de les Comarques to the north of Forats del Queixigar.

What can you see without entering the cave itself? The rock face with its entrance openings at the sharp bend of the Queixigar stream, plus the stark karst scenery of Montsec d'Ares — a region also known as one of Europe's best spots for night-sky observation.