Best lakes around Sabugueiro, a village in Portugal's Serra da Estrela mountains, offers access to several captivating lakes. This region is characterized by its natural beauty, significant geological features, and opportunities for outdoor activities. The landscape showcases evidence of glacial erosion, including polished surfaces and erratic boulder fields. Sabugueiro serves as a base for exploring these high-altitude water bodies.
Last updated: May 19, 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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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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We walked this walk in October, on a beautiful day, after a few days of heavy rain. Due to the previous wet days, parts of the path were quite a challenge. Certainly to keep your feet dry. The advantage was that the water flowed nicely into the 'drain'. Beautiful sight and impressive. Due to the path of pebbles, boulders, unevenness, etc., it is advisable to wear good walking shoes. Take enough food and drink with you, as is always the advice. In sunny weather, protection from the sun is absolutely necessary. There is no protection from the sun during the walk. Walk calmly, enjoy the surroundings and let everything sink in.
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The primary lakes to explore near Sabugueiro include Long Lake (Lagoa Comprida), the largest water reservoir in the Serra da Estrela, and the Vale do Rossim Reservoir, known for its clear waters and scenic beauty. Additionally, Lagoa Escura offers a serene natural experience with unique peat bogs.
The lakes are rich in natural features. Long Lake showcases significant evidence of glacial erosion, including polished surfaces and large fields of glacial erratics. Lagoa Escura is notable for its natural peat bogs, a rare habitat in Portugal. Around the Vale do Rossim Reservoir, you can find unique granite rock formations resembling 'old man's head' and 'old woman's head'.
Yes, there are several excellent hiking trails. The Covão dos Conchos Trail, an easy hike starting from Long Lake, leads to the unique 'bell-mouth spillway'. Many other routes are available for various skill levels. You can find more options on the Hiking around Sabugueiro guide.
Both Long Lake (Lagoa Comprida) and the Vale do Rossim Reservoir are popular spots for summer swims. The Vale do Rossim Reservoir, in particular, is described as an ideal setting for refreshing dips.
Yes, several areas are family-friendly. The Covão dos Conchos Trail is considered an easy walk suitable for families. The Vale do Rossim Reservoir also offers a pleasant setting for strolls and summer activities, with a nearby restaurant, Vale do Rossim River Beach Restaurant, that caters to families.
While specific regulations for dogs vary, many natural areas in Serra da Estrela are generally dog-friendly, especially on trails. It's always advisable to keep dogs on a leash and clean up after them to preserve the natural environment.
The lakes are beautiful year-round, but for hiking and swimming, the warmer months from late spring to early autumn (May to October) are ideal. During this period, the weather is more stable, and the heat is tempered by the altitude. Winter offers a different, often snow-covered, landscape, but some trails may be more challenging.
Yes, near the Vale do Rossim Reservoir, you'll find the Vale do Rossim River Beach Restaurant, which offers food and drinks right by the lake. This area also has accommodation options like camping, yurts, and wooden cabins at the Vale do Rossim Eco Resort.
Access to the high-altitude lakes like Long Lake and Vale do Rossim Reservoir is primarily by car, with parking available near the main access points. Public transport options directly to these remote lake areas are limited, making a personal vehicle the most convenient way to explore.
Lagoa Escura stands out as one of the largest natural water bodies in the Serra da Estrela, experiencing minimal human disturbance. Its consistent water level and depth support significant areas of natural peat bogs along its margins, which are a rare habitat in Portugal. Its depth has also inspired local legends of connections to the sea.
Yes, the Serra da Estrela region offers challenging terrain for both mountain biking and road cycling. You can find various routes, including those that pass near the lakes, on the Road Cycling Routes around Sabugueiro guide and the MTB Trails around Sabugueiro guide.
Many points along the shores of Long Lake offer stunning views, especially on clear days, showcasing its glacial origins. The Vale do Rossim Reservoir also provides picturesque vistas of granite, pine trees, and clear waters. The Covão dos Conchos Trail offers impressive visuals of the unique spillway and surrounding landscape.
Good walking shoes are essential due to the terrain, which can include scree, loose stones, and uneven paths. Layers are recommended as altitude can bring changeable weather. Sun protection is also important, as many trails offer little shade. In wetter conditions, waterproof footwear is advisable.


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