Best natural monuments around Alcaria are situated within the Natural Park of Aire and Candeeiros Mountain, a region known for its distinctive karst landscape. This area features impressive geological formations, including extensive cave systems and natural depressions sculpted by water erosion. Alcaria serves as a gateway to exploring these diverse natural attractions. The landscape offers a variety of natural monuments for discovery.
Last updated: June 29, 2026
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Although the tour is quite short, it thrilled us. On warm days (it was 32 degrees for us) the tour was sweaty. Currently, the authorities have closed the path, a short section of 15 meters has slipped. However, the spot can be easily and safely bypassed.
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The Fórnea stream originates here, in the Cova da Velha cave, where a natural spring flows almost all year round. However, due to the limestone soil, the water easily infiltrates, traveling through underground galleries instead of flowing freely on the surface. As a result, the stunning Fórnea waterfall only reveals its full grandeur after days of heavy rain.
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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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The Fórnea Waterfall is located right in the heart of the Serras de Aire e Candeeiros Natural Park, and is fed by the Fórnea Stream, which in turn flows from the Cova da Velha cave.
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Nice quiet route. No water at the waterfall, unfortunately. Because that would give a different experience, certainly worth it for the beautiful views
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The waterfall only appears after heavy rain! Fórnea waterfall just appear after intense rain!
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Actually, there is supposed to be a waterfall here. Unfortunately dried out due to the drought in July.
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Beyond the well-known sites, consider visiting the Buraco Roto Cave-Necropolis, a cave hidden in a lush forest that transforms into an impressive waterfall during rainy months. Another unique spot is the Pia da Ovelha Cave, an imposing natural cavity featuring a sink carved under a stalactite, historically used as a drinking trough for cattle.
The Natural Park of Aire and Candeeiros Mountain, where Alcaria is located, is renowned for its unique karst landscape. You'll encounter impressive cliffs formed during the Jurassic period, hundreds of caves sculpted by water erosion, sinkholes, and limestone pavements. The Fórnea de Porto de Mós, a massive amphitheater-shaped depression, is a prime example of this geological activity.
Yes, several natural monuments and trails are suitable for families. The Fórnea Waterfall is considered family-friendly, especially after rains when it's most active. For an easy hike, consider the "Fórnea Waterfall – Fornea Waterfall loop from Alcaria" which is just under 4 km. The broader Natural Park also offers various trails with different difficulty levels.
The best time to visit depends on what you want to see. For spectacular waterfalls like the Fórnea Waterfall and the Buraco Roto Cave-Necropolis, the rainy months are ideal as they are fed by seasonal streams. For hiking and exploring the caves, spring and autumn offer milder temperatures, making outdoor activities more comfortable.
The area around Alcaria offers a variety of outdoor activities. You can enjoy extensive hiking, running, and mountain biking. Popular hiking routes include the "Fórnea Viewpoint – Fórnea Summit loop from Alcaria" (7.7 km, moderate) and the shorter "Fórnea Waterfall – Cova da Velha loop from Alcaria" (5.1 km, easy). For more options, explore the hiking trails around Alcaria, running trails, or MTB trails.
Yes, Alcaria is situated within the Natural Park of Aire and Candeeiros Mountain, which is famous for its numerous caves. You can visit the Pia da Ovelha Cave and the Buraco Roto Cave-Necropolis. The Cova da Velha cave is also notable as the origin of the Fórnea stream. The park itself boasts over 130 identified caves, with some of the most famous being Mira de Aire, Alvados, and Santo António Caves.
The Fórnea de Porto de Mós is a massive, amphitheater-shaped natural depression, about one kilometer in diameter and 250 meters high, sculpted by water erosion. It's a dramatic geological wonder within the Natural Park. You can visit it via a trail that starts in Alcaria and leads to its basin. Another trail encircles the Fórnea's ridge, offering panoramic views. The Fórnea Waterfall is located within this area.
Hiking trails around Alcaria and the Natural Park vary in difficulty. You can find easy routes like the "Fórnea Waterfall – Cova da Velha loop from Alcaria" (5.1 km). Moderate options include the "Fórnea Viewpoint – Fórnea Summit loop from Alcaria" (7.7 km). There are also more challenging trails, particularly for longer running or mountain biking routes. Always check the specific trail details before heading out.
Yes, the Buraco Roto Cave-Necropolis is a natural monument with significant historical value, serving as an ancient necropolis. The broader Natural Park also features a 175-million-year-old Jurassic fossil record, including the longest trail of sauropod dinosaur footprints in the world, which is classified as a Natural Monument itself.
The Natural Park of Aire and Candeeiros Mountain is home to a rich and varied animal life. Notably, it provides shelter for 18 species of bats within its numerous grottoes. The diverse landscape also supports various birds, reptiles, and small mammals, making it a good spot for wildlife observation, especially in quieter areas.
While the natural monuments themselves are pristine, Alcaria and nearby villages within the Porto de Mós municipality offer basic amenities. These typically include local cafes, restaurants, and accommodation options. For more specific needs, it's advisable to check in Porto de Mós town or larger nearby centers.
Yes, the Fórnea de Porto de Mós offers dramatic panoramic views. Trails like the "Fórnea Viewpoint – Fórnea Summit loop from Alcaria" are specifically designed to take you to vantage points overlooking this massive natural depression. The ridge surrounding the Fórnea provides excellent opportunities for photography and appreciating the scale of the landscape.


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