The name 'Pozo Negro' (Black Well) derives from the optical illusion created by the depth of the water and the shadows cast by the surrounding rock walls.
The pool is formed by the natural erosion of the Rio Chico as it carves through the limestone geology of the Sierra de Espadán.
The Rio Chico, which feeds the pool, is a tributary known for maintaining flow during periods where smaller streams in the region dry up.
The surrounding area is part of a protected zone within the Sierra de Espadán, one of the most ecologically diverse mountain ranges in the Valencian Community.
Pozo Negro is a deep, natural freshwater swimming hole located within the Sierra de Espadán Natural Park in the province of Castellón. Fed by the waters of the Rio Chico, the site features a stone-walled basin that remains cool throughout the summer months. The pool is surrounded by dense Mediterranean vegetation, including pines and holm oaks typical of the mountain range. Access to the site involves a short hike through the rugged limestone landscape of the Fuentes de Ayódar municipality. The water is sourced from mountain runoff and springs, ensuring clarity despite the deep, dark appearance that gives the pool its name. The area serves as a significant cooling point along the river's path, providing a habitat for local riverine flora and fauna.
From the elevated rock ledge overlooking the pool to capture the contrast between the dark water and the greenery.
Wear water shoes with strong grip as the submerged rocks can be slippery and uneven.
Bring a waterproof bag for your belongings, as the area is rustic and lacks lockers or storage facilities.
Pack out all trash, as this is a protected natural area with no waste collection services.
Do not attempt to jump from the surrounding cliffs, as hidden underwater rocks pose a significant injury risk.
Respect the quiet nature of the environment; loud music and disruptive behavior are discouraged to protect local wildlife.
