Natural monuments around Pousos, located in the Leiria district of Portugal, offer a diverse natural landscape. The region is characterized by significant geological formations, including karst landscapes and ancient river sources. These sites provide opportunities to explore unique natural features and historical elements.
Last updated: May 2, 2026
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The Lis River, whose source is in the town of Fontes, Cortes, is one of the few rivers in the country whose current flows from south to north and, in the final kilometres, from east to west. In winter and early spring, it is possible to see water emerging from the ground in surprising quantities. In the summer months, the source is usually dry.
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The Sheep's Sink is an imposing natural cavity, named after the sink carved under a stalactite that, in the rainy months, pours out abundant water. In the past, this natural refuge served as a drinking trough for cattle.
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The Buraco Roto is a necropolis of singular beauty, hidden in a lush forest of oak, laurel and cork oak trees. In the rainy months, it becomes a natural spectacle, spilling large quantities of water and forming an impressive waterfall.
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I recommend it to cyclists who want to push the limits.
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While the spring itself is dry in summer it must be spectacular when the rains are back in November. But the Rio Lis is also fed by water coming from inside the mountain and ground-water from the area, so water starts flowing a few hundred meters further down the riverbed, nice and fresh. There is a lovely path following it, and those who did some walking on a lovely summers day will really enjoy a little dip, maybe some swimming, but at least a bit of wading through it. There is easy access in several places, have fun 😀!
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Pia da Ovelha, point of interest inserted in the PR2 BTL trail
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headwater of the Lis river, a river that cross the city of Leiria and flows into Praia da Vieira. An amazing place to visit during the winter and after some heavy raisn, where you can see the water coming from the earth.
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An imposing example of an oak, the so-called 'Carvalho do Padre Zé' with 5.87 meters in perimeter and 20.90 meters in height. This beautiful and huge tree deserves to be visited.
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The region around Pousos is rich in geological formations, primarily characterized by its karst landscape. You can explore impressive underground networks of caves, such as the Buraco Roto Cave-Necropolis, which also features a waterfall during rainy months, and the imposing Pia da Ovelha Cave. The area also features unique river sources like the Source of the Lis River, where water emerges in surprising quantities during winter and early spring.
Yes, Pousos is situated close to the Serras de Aire e Candeeiros Natural Park, a protected area renowned for its extensive limestone formations, intricate cave systems, and dramatic karst landscape. This park is a haven for nature enthusiasts and speleologists, offering a chance to witness unique geological wonders and diverse wildlife.
You can visit the Dinosaur Footprints Natural Monument, located on the eastern edge of the Serra de Aire, within the Serras de Aire e Candeeiros Natural Park. This globally significant paleontological site preserves hundreds of exceptionally well-preserved sauropod dinosaur footprints from the Jurassic period, including the longest known track in the world.
The Serras de Aire e Candeeiros Natural Park, which encompasses many of the region's natural monuments, is home to diverse wildlife. You can find over 100 species of birds, including the Eurasian Eagle Owl, and various bat colonies, which are a symbol of the park. The flora also includes approximately 600 plant species, some of which are endemic to Portugal.
Yes, several natural monuments are suitable for families. The Source of the Lis River is considered family-friendly, offering an interesting natural phenomenon. Additionally, the ancient Carvalho do Padre Zé, an imposing oak tree, is also a family-friendly natural monument. The Dinosaur Footprints Natural Monument also provides an exciting and educational experience for all ages.
The area around Pousos offers various outdoor activities. You can explore numerous hiking trails within the Serras de Aire e Candeeiros Natural Park, go caving in its extensive cave systems, or enjoy cycling. For specific routes, you can find options for hiking, mountain biking, and running around Pousos.
The best time to visit depends on your interests. For witnessing the impressive water flow at the Source of the Lis River or the waterfall at Buraco Roto Cave-Necropolis, winter and early spring (after heavy rains) are ideal. For hiking and exploring the caves in the Serras de Aire e Candeeiros Natural Park, spring and autumn offer pleasant temperatures. Summer months can be warm, and some river sources may be dry.
Yes, the Buraco Roto Cave-Necropolis is a notable example, serving as a necropolis of singular beauty hidden within a lush forest. The Pia da Ovelha Cave also has historical significance, having served as a drinking trough for cattle in the past.
The Mira de Aire Caves, located within the Serras de Aire e Candeeiros Natural Park, are recognized as one of the '7 Natural Wonders of Portugal.' They are part of an intricate network of underground formations and are well-prepared for visitors, offering guided tours to explore their impressive stalactites and stalagmites.
Visitors frequently appreciate the unique geological formations, the tranquility of the natural settings, and the opportunities for exploration. The surprising quantities of water at the Source of the Lis River in winter, the historical significance and natural spectacle of the Buraco Roto Cave-Necropolis, and the imposing structure of the Pia da Ovelha Cave are often highlighted. The ancient Carvalho do Padre Zé is also a popular spot for its sheer size and beauty.
Yes, the region offers a range of hiking trails. While some natural monuments like Pia da Ovelha Cave and Buraco Roto Cave-Necropolis are associated with challenging routes, you can also find moderate and easy options. For example, some hiking routes around Pousos are rated as easy, such as the Julinha do Lis Azulejo Mural loop.


Extend your search for the best caves by checking out these guides of the top ones around Pousos: