Best lakes around Manteigas (Santa Maria) are situated within the Serra da Estrela Natural Park, a region shaped by glacial activity. This area features numerous glacial valleys, lakes, and reservoirs. The landscape is characterized by high-altitude water bodies, granite formations, and diverse natural features. Manteigas (Santa Maria) offers a variety of aquatic destinations for exploration.
Last updated: July 1, 2026
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Covão dos Conchos is an artificial lagoon located in the Serra da Estrela Natural Park, Portugal, near the mountain village of Sabugueiro. Covão dos Conchos became famous for its bell-mouth spillway[1]. The spillway was built in 1955 to allow water to be transferred from the Ribeira das Naves River to Lagoa Comprida. It is part of the Serra da Estrela Hydroelectric System. This science fiction-style spillway became famous when photographs of the hole went viral on social media in 2016. Over the past 60 years, the growth of vegetation at the funnel's mouth has created extraordinary biodiversity and increased its ethereal allure. It is 4.6 meters high and 48 meters in circumference. The tunnel that collects the water is 1,519 meters long.
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Located within the Planalto Superior biogenetic reserve, the Rossim Valley is a unique location of great scientific, environmental, and scenic value that deserves to be protected and enhanced. Although it is an artificial lake, over time, conditions have been created that have transformed this area into an excellent leisure and recreation area that attracts countless tourists. The Vale do Rossim recreation center is located at an average altitude of 1,437 meters. Before the dam was built, it was one of the best high-altitude pastures in the municipality of Gouveia. The area has almost always been frequented by transhumance herds, flocks that gathered here from São João to the Sr. do Calvário festivities in August.
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Thanks for sharing.🙏
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At over 1,400 meters above sea level, the Rossim Valley Reservoir is a haven of granite, pine trees, and crystal-clear waters in the heart of the Serra da Estrela Mountains. It's the perfect setting for strolls, summer swims, and admiring nature in all its splendor, one of Portugal's highest jewels.
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Hiking in the Serra da Estrela is always pleasant, with stunning scenery and spectacular trails. 👍
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This restaurant and bar is located right on the lake (there's nothing else in the area), and it's nice to sip a nice beer 🍺 and grab a bite to eat after a sunny day or a nice hike. Also... For those who want to stay longer, there's the Vale do Rossim Eco Resort: camping, equipped yurts, or wooden cabins, with the option of half-board at a reasonable price at this lakeside restaurant. Breakfast is good, dinner is very simple, but all drinks are included, including a bottle of wine 🍷 🤪.
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A beautiful nature trail, about 9 km round trip to Covão dos Conchos. Unfortunately, on August 15th, the water couldn't reach the hole and thus reveal the waterfalls. It's a reservoir, part of the Serra da Estrela hydroelectric system. A funnel-shaped drainage structure that allows water to flow from this body of water to Lagoa Comprida. The spillway was built in 1955 to divert water from Ribeira das Naves to Lagoa Comprida. Over the past 60 years, moss and foliage have grown over the mouth of the funnel, creating a captivating spectacle. It is 4.6 meters high and 4.8 meters in circumference. The tunnel that collects the water is 1,519 meters long. It's a stunning place to visit, not only for the combination of human intervention and nature, but also for the surrounding landscape.
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Located at an altitude of approximately 1,600 meters, Lagoa Comprida is the largest water reservoir in the Serra da Estrela, intended for hydroelectric generation. This natural lake lies in a wide depression of glacial origin, approximately one kilometer long, which fed the Covão Grande glacier. Numerous glacial scars are visible along its banks, making this lake one of the most interesting geomorphological sites in the Serra da Estrela. Construction on this lake began in 1911, and by 1914, it was already six meters high. Later, in 1965, it underwent heightening work that increased its height to 28 meters, currently boasting a storage capacity of approximately 14 cubic hectometers, flooding an area of approximately 80 hectares. Small streams of water flow into this lagoon, as well as water retained in the Covões dos Conchos and Covões do Meio and carried to this lagoon through underground tunnels.
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The region is renowned for its stunning glacial valleys and unique geological formations. You can observe numerous glacial scars along the banks of Long Lake, which was originally a natural glacial depression. Another remarkable feature is the bell-mouth spillway at Covão dos Conchos Trail, an extraordinary blend of engineering and nature that has gained viral fame for its appearance.
Yes, Long Lake is historically significant as the largest water reservoir in the Serra da Estrela, developed for hydroelectric generation with construction beginning in 1911. Geologically, its banks clearly display numerous glacial scars, making it a key geomorphological site. The entire region is shaped by glacial activity from the Pleistocene epoch.
Vale do Rossim Reservoir, situated over 1,400 meters above sea level, is considered one of Portugal's highest 'jewels'. It's characterized by its striking granite landscape, surrounding pine trees, and crystal-clear waters, making it an ideal spot for leisurely strolls and enjoying nature's splendor.
Yes, Lagoa Escura (Dark Lagoon) is known for its intriguing legends, including tales of underwater monsters, enchanted Moorish princesses, and even shipwrecks. Its mysterious allure, combined with its natural beauty, makes it a fascinating place to visit.
Covão d'Ametade is a picturesque river bend and glacial cirque where the Zêzere River originates. It's particularly stunning in autumn when the birch trees display vibrant yellow, red, and orange hues, offering an invigorating experience for the senses amidst the imposing rock formations of Cântaro Magro and Cântaro Gordo.
Absolutely. The Serra da Estrela Natural Park, where these lakes are located, offers a variety of hiking routes. You can find numerous trails, including easy, moderate, and difficult options, that allow you to explore these high-altitude water mirrors. For more detailed information on routes, you can check the Hiking around Manteigas (Santa Maria) guide.
Yes, there are several easy walking routes. For instance, you can find easy loops around Vale do Rossim Reservoir. The Easy hikes around Manteigas (Santa Maria) guide provides options like the Faias Trail (PR 13) which is also considered easy.
Yes, some locations offer opportunities for wild swimming. Vale do Rossim Reservoir is ideal for summer swims. Additionally, the natural pool at Hidden cascade at Poço do Inferno invites visitors for a refreshing dip.
The best time depends on your preferred activities. Summer is excellent for swimming and enjoying the clear waters, especially at Vale do Rossim Reservoir. Autumn is particularly beautiful for visiting Covão d'Ametade, when the birch trees display vibrant colors. Spring offers lush landscapes and pleasant hiking weather. Always check the weather forecast before your visit, especially for high-altitude areas.
Many of the lakes and their surrounding areas are family-friendly. Covão dos Conchos Trail and Vale do Rossim Reservoir are both categorized as family-friendly. There are also easy walking routes suitable for families, as mentioned in the Easy hikes around Manteigas (Santa Maria) guide.
Yes, near Vale do Rossim Reservoir, you can find the Vale do Rossim River Beach Restaurant, which is nicely located right on the lake. This area also offers accommodation options like the Vale do Rossim Eco Resort, with camping, yurts, or wooden cabins.
For exploring the lakes and trails, it's advisable to wear good walking shoes, especially since some paths can be covered with loose stones or be uneven. Always take enough food and drink with you. In sunny weather, sun protection is absolutely necessary as there can be little shade during walks. For swimming, pack appropriate gear.


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