Best natural monuments around Chainça are primarily found within the nearby Serras de Aire e Candeeiros Natural Park, located in the Leiria District of Portugal. This region is characterized by a distinctive karst landscape, featuring extensive cave systems and significant paleontological sites. The area offers a compelling blend of geological marvels and diverse natural features, providing numerous opportunities for exploration. Its unique terrain includes surface formations like sinkholes and underground networks of caves.
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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This region is one of the favorite destinations for climbing enthusiasts in Portugal. The Ventos and Malhadouro valleys offer unmissable challenges for those seeking adventure at heights.
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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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The region around Chainça is dominated by the unique karst landscape of the Serras de Aire e Candeeiros Natural Park. This area features extensive underground cave systems, sinkholes (dolines), and limestone pavements (lapiés). You can explore impressive natural cavities like Pia da Ovelha Cave, known for its large natural cavity and a sink carved under a stalactite.
Yes, the Buraco Roto Cave-Necropolis is a significant site. It's a necropolis of singular beauty, hidden within a lush forest, offering a glimpse into ancient practices within a natural setting. Additionally, the Natural Monument of Dinosaur Footprints, located within the Serras de Aire e Candeeiros Natural Park, features well-preserved dinosaur tracks, providing a fascinating paleontological insight.
For families, the Source of the Lis River is a great option, especially in winter and early spring when water emerges in surprising quantities. Another family-friendly spot is the Carvalho do Padre Zé, an imposing and beautiful oak tree that is worth visiting.
The mild climate during spring and autumn makes these seasons particularly suitable for exploration. Spring brings vibrant wildflowers, while winter and early spring are ideal for witnessing the full flow of the Source of the Lis River and the impressive waterfall at Buraco Roto Cave-Necropolis.
Absolutely. The Serras de Aire e Candeeiros Natural Park offers numerous hiking trails. For example, you can find routes that pass by Vale dos Ventos and Pia da Ovelha Cave. You can explore various hiking options in the area by checking out the Hiking around Chainça guide.
The region offers diverse outdoor activities. For cycling enthusiasts, there are numerous MTB and gravel biking trails. You can find detailed routes in the MTB Trails around Chainça guide and the Gravel biking around Chainça guide. The Vale dos Ventos is also a popular destination for climbing.
The park is renowned for its unique karst landscape, extensive cave systems, and paleontological sites. It boasts around 1500 known caves, including famous show caves like Mira de Aire, and is home to the Natural Monument of Dinosaur Footprints. Its diverse ecosystem supports over 100 bird species, bats, and around 600 plant species, making it a rich area for nature lovers and scientists alike.
Yes, the Serras de Aire e Candeeiros Natural Park is famous for its caves. While Pia da Ovelha Cave and Buraco Roto Cave-Necropolis offer unique experiences, the park also features well-known show caves like Mira de Aire Caves, Grutas de Santo António, and Grutas de Alvados, which provide guided tours through their vast chambers and impressive formations.
The Serras de Aire e Candeeiros Natural Park is home to diverse wildlife. You can observe over 100 bird species, including the Eurasian Eagle Owl and Red-billed Jackdaw, which nest in the park's cavities. The extensive cave systems also provide refuge for various bat species. The park's flora includes around 600 plant species, with wild orchids and endemic Portuguese species.
Visitors appreciate the blend of geological marvels and natural beauty. The unique spectacle of water emerging from the ground at the Source of the Lis River in winter, the historical intrigue of the Buraco Roto Cave-Necropolis, and the imposing presence of the Carvalho do Padre Zé are frequently highlighted. The challenging climbs at Vale dos Ventos are also a favorite for adventure seekers.
Yes, the region features several interesting water-related phenomena. The Source of the Lis River is notable for water emerging from the ground in surprising quantities during winter and early spring. The Buraco Roto Cave-Necropolis transforms into a natural spectacle with an impressive waterfall during rainy months. Additionally, the Fórnea is a geological formation where a spring feeds the Fórnea stream, and the Mar de Mira-Minde is a unique temporary 'natural swimming pool' formed by heavy rainfall.


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