Best natural monuments around Asseiceira include diverse natural attractions. The region features a landscape with significant biodiversity, particularly around the Paúl de Manique do Intendente, an area recognized for its rich natural heritage. This ecosystem supports over 180 species, making it a notable site for nature observation. The area around Asseiceira offers 7 natural monuments for exploration.
Last updated: June 30, 2026
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Known as Buracos Mineiros, this is one of the many caves where a variety of prehistoric remains have been found, showing signs of human settlement in the Montejunto region. During the archaeological exploration of the cave, a staircase with a handrail was installed to allow easy access to it.
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Access is via a solid staircase.
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I mentioned that on my previous suggestion for this place. There is an alternative to the blackberry vines: a little before you start to find them, turn left to a little footpath that goes between the trees, it is sloping and can be slippery in winter.
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This trail was great fun, but unfortunately blackberry vines have joined the ferns near the end and made the passing a bit complicated.
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At the end of this segment, towards Rio Maior, on the right side of the road there is a small park where it is possible to stop and walk a little to observe the magnificent natural caves on the banks of the Rio Maior, a practically forgotten river that gave its name to the current city from Rio Maior. Currently, the flow of the river is very low, drying up completely in the summer months. A little of history: "The Rio Maior rises in a picturesque place called «Bocas», a large gorge that cuts the mountain range, through which the Santarém-Peniche road also passes, located west of the city of Rio Maior. the picnic on Good Summer Day. It is said that in the mid-19th century, still on the Maior river, in winter or in times of plenty of water, boats sailed, almost all sailing or rowing, approaching the Tagus to change the loads to other larger boats." Source: Memories of Rio Maior - https://memoriasderiomaior.blogs.sapo.pt/2023.html
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Small trail that goes through the stunning vegetation that surrounds it. At the end, the trail seems to have no way out, carefully pass between the ferns that are probably taller than you and that block visibility. Visit and respect and Nature.
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“Paul Natura”, Manique do Intendente https://www.youtube.com/watch?v=9nKhlLvOrJw
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Paúl de Manique do Intendente is an area of around 97,000 square meters that constitutes a very rich natural heritage of great importance in terms of biodiversity, namely in terms of avifauna, already recognized at national level. It is an ecosystem composed of more than 180 species, where you can find 5 "simply unique" species such as the striped tortoise, the common caiman, the otter, the black stork and the reed. The municipality has been focusing on promoting this space, having recently advanced with the installation of an infrastructure for the observation of the fauna and flora of Pául, which aims to promote knowledge, protection and preservation of this unique and so rich ecosystem for the Municipality of Azambuja and for the entire region.
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Near Asseiceira, you can explore diverse natural features. The most prominent is Paúl de Manique do Intendente., a significant wetland known for its rich biodiversity, including over 180 species and five unique species like the striped tortoise and black stork. You can also discover the Bocas Gorge with its natural caves along the Rio Maior, and the stunning vegetation of the Montejunto - Squirrel Trail.
Yes, the Fontainhas Cave, also known as Buracos Mineiros, is a natural monument with historical significance. Archaeological explorations have revealed prehistoric remains, indicating human settlement in the Montejunto region. Access to the cave is facilitated by a solid staircase.
For expansive views, head to the Top of the eastern side of Montejunto mountain.. This summit is known for its superb vistas, though it can be windy. Other viewpoints are also found within the biodiverse Paúl de Manique do Intendente., offering sights of its unique flora and fauna.
The Paúl de Manique do Intendente. is considered family-friendly. It features infrastructure specifically designed for observing fauna and flora, making it an engaging and educational experience for all ages to learn about its rich biodiversity.
Visiting during spring or autumn is generally recommended for comfortable temperatures and vibrant nature. Some areas, like the Rio Maior river near Bocas Gorge, can dry up completely in the summer months, affecting the scenery. The Top of the eastern side of Montejunto mountain. can be windy, so dressing in layers is advisable regardless of the season.
The terrain varies. The Paúl de Manique do Intendente. offers relatively easy observation paths. For more challenging terrain, the trail leading to the Top of the eastern side of Montejunto mountain. involves some loose rock. The Montejunto - Squirrel Trail can have dense plant growth and blackberry vines in sections, though an alternative footpath is available. The Fontainhas Cave has staircase access.
The region around Asseiceira offers a variety of outdoor activities. You can find numerous cycling routes, including touring bicycle, road cycling, and mountain biking trails. For detailed routes and guides, explore the Cycling around Asseiceira, Road Cycling Routes around Asseiceira, and MTB Trails around Asseiceira guides.
Yes, there are hiking opportunities. For instance, the Montejunto - Squirrel Trail offers a walk through stunning vegetation. While not explicitly listed as hiking guides, many of the cycling and MTB routes can also be explored on foot, offering diverse terrain from moderate to difficult. Check the MTB Trails around Asseiceira guide for routes that might suit hiking.
Visitors particularly appreciate the rich biodiversity of the Paúl de Manique do Intendente., especially for birdwatching and nature observation. The superb views from the Top of the eastern side of Montejunto mountain. are also highly rated, as is the experience of walking through the unique vegetation of the Montejunto - Squirrel Trail.
Absolutely. The Paúl de Manique do Intendente. is an exceptional spot for wildlife observation, particularly for its avifauna. It is home to over 180 species, including unique ones like the striped tortoise and the black stork. The municipality has even installed observation infrastructure to enhance the experience.
Yes, you can explore natural caves in the area. The Bocas Gorge features magnificent natural caves along the banks of the Rio Maior. Additionally, the Fontainhas Cave provides an accessible cave experience with a solid staircase.


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