The name 'Urederra' originates from the Basque words 'ura' (water) and 'ederra' (beautiful).
The water is highly alkaline due to the dissolution of limestone, which contributes to the formation of travertine deposits along the riverbed.
The spring is the result of a significant geological fault that forces trapped groundwater to the surface at the base of a 300-meter vertical cliff.
The ecosystem is designated as a 'Nature Reserve' to protect the unique riparian vegetation and endangered bird species, such as the Egyptian vulture.
During peak rainfall, the volume of water exiting the spring increases significantly, sometimes creating temporary secondary cascades along the cliff face.
Nacedero del Urederra is the karst spring where the Urederra River emerges from the Urbasa-Andía Natural Park limestone massif in Navarra. The path follows the river upstream for approximately 5.3 kilometers round trip, revealing a series of tiered, turquoise-colored pools and cascades. The intense blue coloration of the water results from limestone particles suspended in the spring water reflecting specific light wavelengths. The trail is located within a protected Natural Reserve, necessitating strict adherence to marked paths to prevent erosion of the riparian forest. The terrain transitions from gravel paths to rocky sections as hikers approach the main cliff-side waterfall. Access to the trail is strictly regulated by a daily visitor capacity limit managed through an online reservation system. The spring is fed by underground aquifers within the Sierra de Urbasa.
The elevated viewpoint overlooking the final, largest waterfall at the end of the trail.
Book your entry permit online well in advance, as daily quotas sell out rapidly during weekends and holidays.
Wear sturdy, closed-toe hiking footwear with good grip, as the limestone paths can be slippery when wet.
Bring a portable rain shell, as the valley microclimate can experience sudden changes in humidity and temperature.
Use the provided parking area at the village entrance of Baquedano; parking in the village center is strictly prohibited for visitors.
Attempting to visit without a pre-booked permit, as access is denied at the checkpoint; swimming in the turquoise pools, which carries heavy fines.
Access is restricted daily; reservations are mandatory year-round, and the site may close during extreme weather events or high wildfire risk periods.
Swimming is strictly forbidden in all pools and the river to preserve water quality; stay on designated trails at all times; noise must be kept to a minimum to protect local wildlife.
