During a blazing heat wave, attention naturally drifts toward remarkable destinations. Beaches, natural pools, and rivers are the top picks today, yet one place rises above the rest for its originality. The tale centers on an underground river and the cave system near Alicante, renowned as the longest navigable underground river in Europe and a standout attraction just a short drive from the city.
Located in the province of Castellón, Vall d’Uixó stands as a premier tourist destination, celebrated for its rich natural and cultural heritage. Among its dazzling highlights are the Coves de Sant Josep, the longest navigable underground river in Europe. This magical site has drawn more than a million visitors over the past five years, drawn by its unique combination of geology and history.
Les Coves de Sant Josep is more than a geological marvel; it is a cultural treasure. Situated about 10 kilometers from the sea, the caves offer a distinctive experience: a boat journey along 800 meters of underground river, paired with a guided walk inside the caverns. Surrounded by 255 meters of stalactites and stalagmites, visitors feel as if they are reaching the heart of the earth itself.
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With a steady year-round temperature of around 20 degrees, the route is lit with LED lights that respect the environment and preserve the formations. The walk is comfortable and the total visit lasts about 45 minutes, a blend of on-foot exploration and boat travel. Along the way, one small surprise awaits, kept secret for now.
Journey to the heart of the world
The tour of Les Coves de Sant Josep begins in a broad hall where the first dock sits. Visitors pass through a vast chamber once home to a large nocturnal colony of bats. As the boat glides deeper, subterranean landscapes unfold in breathtaking beauty, with sights like Diana’s Lake and the enigmatic Blue Lake. The Siphon Gallery features an artificial tunnel that represents one of the most exhilarating segments of the voyage.
The longest navigable river in Europe continues to unfold with each turn. Flower Waterfall and Devil Face are among the formations that spark the imagination. The journey ends at a third dock that marks the public area’s boundary. Returning by boat provides another chance to admire dramatic scenes such as Cathedral and Devil’s Lake.
Prepare your visit: tips and advice
For travelers keen to explore this river, booking in advance is recommended, particularly during peak season. Entry to Les Coves de Sant Josep carries a fee, with tickets available online ahead of time or at the ticket office upon arrival. The price often stands at 14 euros for adults and 8 euros for children, with discounts available for seniors, students, large families, and differently abled visitors.
How to get there from Alicante?
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For travelers in Alicante, visiting this river offers a memorable adventure. The journey from Alicante to Les Coves de Sant Josep covers roughly 220 kilometers and usually takes about two and a half hours by car, depending on traffic. It makes for an ideal day trip or weekend escape, pairing natural wonder with a touch of regional culture.
Visiting the cave and its river makes for a versatile experience, suitable for families, couples, friends, or solo explorers alike.