Natural monuments around Cadaval are primarily defined by the Serra de Montejunto Protected Landscape, a significant natural area reaching an altitude of 666 meters. This region features diverse geological formations, including caves and chasms, and supports rich biodiversity with over 400 identified plant species and 75 bird species. The landscape offers panoramic views and is integrated into the Natura 2000 Network, underscoring its ecological importance.
Last updated: June 23, 2026
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The area of the springs, on the Ota River, was once a leisure area for the local population, including the local bathing area in the summer. This site remained natural for a long time after the EPAL was installed, but at a certain point, the intensification of agriculture with the use of chemical fertilizers and pesticides, intensive livestock farming, and urban sewage made the flow from upstream a polluting threat to EPAL's water intakes, and EPAL paved several dozen meters of the river course near the site where it is installed with reinforced concrete.
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Usually in summer there isn't much water there, but always a beautiful place to walk or bike.
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great place to chill out. even have a bath. don't know if it will have water in summer though.
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Cornaga Valley - This is a route to take slowly, enjoying the magnificent nature that surrounds you. Listen to the birds, hear the sound of water sliding between old stones.
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The Ota River has its source in the Montejunto mountain range. It flows through the Ota area and empties into the Alenquer River, which in turn meets the Tagus River near Vila Nova da Rainha. At this point the river is close to the village of the same name, Ota.
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The Serra de Montejunto Forest Watch Station can be accessed via a pastoral trail from the picnic park. It offers a beautiful panorama of the region north of the Serra.
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The karst landscape of Montejunto constitutes the extreme southwest of the Estremenho Limestone Massif. Deep valleys, lakes, gravel pits and lapiás are some of the formations found here, testimonies of various geological eras. Water has been the protagonist in erosion phenomena over time. Several deposits of gravel pits result from the cracking of the outcrops caused by the expansion of the water which, when freezing, breaks the rock into small parts. Source: https://montejunto.pt/natureza/paisagens/
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The natural monuments around Cadaval are primarily characterized by the Serra de Montejunto Protected Landscape. This area is rich in geological formations such as caves, chasms, and residual lagoons. You'll also find diverse landscapes including the Vale Cornaga Waterfall, the tranquil Paúl de Manique do Intendente lake, and the Ota River.
The Serra de Montejunto Protected Landscape is a haven for biodiversity. Approximately 75 species of birds have been identified, including endangered species like Bonelli's eagle and the Eurasian eagle-owl. Its flora is also remarkably diverse with 400 identified species. Notably, a cave in Cadaval within the Serra de Montejunto is an Important National Bat Roost, housing thousands of *Miniopterus schreibersii* bats during winter. The Paúl de Manique do Intendente is also recognized for its rich avifauna and other species like the striped tortoise and otter.
Yes, the Serra de Montejunto area has a rich history. It has been inhabited since ancient times, with archaeological remains from the Neolithic period found in caves. The summit was also home to the first Dominican convent in Portugal in the 12th century. An interesting historical site is the Real Fábrica de Gelo (Royal Ice Factory) from the 18th century, which supplied ice to Lisbon and is classified as a National Monument.
The Serra de Montejunto offers a variety of outdoor activities. Popular options include hiking, speleology (caving), climbing, paragliding, bird watching, and astronomical observation. There are several trails for different skill levels, including an easy 1.8 km circular walk at the Montejunto biodiversity station. You can find more routes for hiking, cycling, and mountain biking on the respective guide pages: Hiking around Cadaval, Cycling around Cadaval, and MTB Trails around Cadaval.
The Serra de Montejunto Protected Landscape offers options for families, such as the Montejunto biodiversity station trail, an easy 1.8 km circular walk with informative posters. The Paúl de Manique do Intendente is also a great spot for families interested in nature and bird watching, with dedicated observation infrastructure.
For stunning panoramic views, head to the Serra de Montejunto Watchtower. Often referred to as the 'Balcony of Estremadura,' the Serra de Montejunto, at 666 meters, is the highest natural viewpoint of Estremadura, offering expansive vistas of the region.
The region features several interesting water elements. The Vale Cornaga Waterfall offers a tranquil setting with the sound of flowing water. The Paúl de Manique do Intendente is a significant lake ecosystem. Additionally, the Ota River originates in the Montejunto mountain range and features a geomorphologically relevant 'Cannon' in its valley.
Yes, the Serra de Montejunto has several trails. These include the Montejunto biodiversity station trail, an easy 1.8 km circular walk. Other moderate trails like 'Trilho da Quinta da Serra' and 'Trilho dos Currais e Calçada' are also available. For a comprehensive list of hiking options, visit the Hiking around Cadaval guide page.
The Serra de Montejunto is part of the Estremenho Limestone Massif, making it geologically significant. It features a karst landscape with deep valleys, residual lagoons, and formations like gravel pits and lapiás, which are testimonies of various geological eras. Water erosion has played a major role in shaping these unique features, as seen at the Gravel Bend highlight.
Absolutely. The Cadaval region, particularly around the Serra de Montejunto, offers numerous routes for cycling and mountain biking. You can explore various terrains and enjoy views of the natural monuments. For detailed routes and difficulty levels, check out the Cycling around Cadaval and MTB Trails around Cadaval guide pages.
Paúl de Manique do Intendente is a highly significant natural monument due to its rich biodiversity. This ecosystem, spanning around 97,000 square meters, hosts over 180 species, including five 'simply unique' species such as the striped tortoise, common caiman, otter, black stork, and reed. It's recognized nationally for its importance, with recent infrastructure installed for fauna and flora observation.
The Serra de Montejunto Protected Landscape and surrounding natural monuments can be enjoyed year-round. However, for activities like hiking and bird watching, spring and autumn offer milder temperatures and lush landscapes. During summer, some water features like the Vale Cornaga Waterfall might have reduced water flow, but the area remains beautiful for walks and cycling.
Visitors to Cadaval's natural monuments appreciate the stunning panoramic views, especially from the Serra de Montejunto Watchtower. The tranquil settings of places like Vale Cornaga Waterfall and the rich biodiversity of Paúl de Manique do Intendente are also highly valued. The opportunity to connect with nature, listen to birds, and enjoy the diverse landscapes makes for a memorable experience.


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