Ucero brings together natural and cultural features that can be explored through specific trails, rock formations and traces of history. The municipality is part of the Parque Natural Cañón del Río Lobos. To plan your visit, consider what you would like to focus on: the river, a circular trail or views of historical landmarks. The Casa del Parque del Cañón del Río Lobos serves as a point of reference for organizing visits to the nature park. It is in Ucero, on the SO-920 road at kilometre 16. The building dates from the 19th century and was formerly used as a chocolate factory and a paper mill. The Casa therefore combines practical guidance for visits to the park with a history of its own uses.
Landscape of the Cañón del Río Lobos
In the Parque Natural, the dissolution of limestone has created a karst landscape with a labyrinth of caves on several levels. Some caves are connected by deep shafts. Vertical, vegetation-free rock walls rise above the river. There, leafy vegetation contrasts with conifers and bare rock. The river, rock walls and underground formations give the landscape different points of interest; the nature park is therefore more than a single view of the canyon.
Choose a trail by river, circuit or destination
The PR-SO-BU-65 Senda del Río runs alongside the Río Lobos through the park and crosses the river several times. Its starting point is at the junction with the SO-920 road, next to the Fuente Engómez recreation area in the municipality of Ucero. The Senda del Castillo offers a different focus: this easy circular trail runs along the Río Ucero and passes through a 130-metre stretch of the Roman canal that carried water to the town of Uxama. The two trails therefore focus on different rivers and trail features.
The Senda de las Gullurías is an 8.55-kilometre circular trail that starts and ends at the Casa del Parque car park and reaches the Mirador de las Gullurías. The viewpoint is considered a good place for birdwatching. For a comparison of trail profiles, you can choose between river crossings, an easy circular trail with a canal section, and a circular route of a specified length with a birdwatching viewpoint. Another option is the PR SO3 Ruta de las Sabinas, which connects Ucero and Calatañazor.
Historical landmarks in Ucero
Castillo de Ucero and its surroundings form a 2.3-hectare archaeological site with remains dating from the Iron Age to the Middle Ages. The Romanesque-Protogothic Ermita de San Bartolomé was built in the first decades of the 13th century in a transitional Romanesque style with Cistercian influence and was part of the former Templar monastery of San Juan de Otero. As of 27 August 2026, the Ermita was closed until further notice; check current access arrangements before visiting. Ucero’s Iglesia Parroquial dates from the 18th century. There are paintings in Cueva Conejos. The historical landmarks thus range from a site with remains from several periods to buildings with specific dates.
Caves and planning your visit
Soria Cavernaria is listed as a provider of guided visits to Cueva de la Galiana Baja; check current availability before travelling. The cave tour includes visits to wide galleries, as well as negotiating short climbs and simple rope sections. The specific itinerary may change. Factor this tour into your plans only after confirming the current details.
Discover more destinations: Santervás De La Sierra, Monteagudo de las Vicarías, Quintanas De Gormaz, Villar Del Río, Ciudad de Osma, Molinos De Duero, La Rasa, Abejar.
For the main travel overview: Soria.
