Lakes around Manteigas are situated within the Serra da Estrela Natural Park, an area characterized by glacial valleys and rivers. This region offers a variety of aquatic features, including natural and artificial lakes and lagoons. These water bodies are notable for their geological significance and provide opportunities for outdoor activities. The landscape reflects the historical glacial activity that shaped the area.
Last updated: May 13, 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 lakes around Manteigas, situated within the Serra da Estrela Natural Park, are primarily known for their glacial origins. For instance, Long Lake (Lagoa Comprida) is the largest water reservoir in the Serra da Estrela, lying in a wide depression of glacial origin with numerous visible glacial scars along its banks. The region also features sites like the Extinta Lagoa Glaciar da Nave de Santo António, an 'extinct glacial lake' that highlights the area's significant geological history.
Yes, several spots are suitable for families. Vale do Rossim Reservoir is considered family-friendly, offering a beautiful setting for strolls and nature appreciation. Additionally, the Praia Fluvial da Relva da Reboleira, a river beach in Manteigas, provides a refreshing spot for swimming and is part of a larger recreation unit with amenities, making it ideal for family outings.
The region offers a variety of hiking trails. For example, the Covão dos Conchos Trail is a popular, generally easy hike, though some areas with scree require good footwear. You can find more detailed information and routes, including the 'Wild Boar Trail' and 'Faias Trail (PR 13)', on the Hiking around Manteigas guide.
While some lakes are reservoirs, the Praia Fluvial da Relva da Reboleira in Manteigas offers a designated river beach for swimming in the cold waters of the Zêzere River during warmer months. Some visitors also mention swimming in the natural pool at Hidden cascade at Poço do Inferno, though access can be challenging and requires good footwear.
The best time to visit for outdoor activities largely depends on your preference. The warmer months are ideal for swimming at river beaches and enjoying pleasant strolls. However, the region's high altitude means that even in summer, the heat is tempered. For hiking, spring and autumn offer comfortable temperatures and beautiful scenery. Winter can be challenging due to snow and colder conditions, especially at higher altitudes like Long Lake.
Yes, there are options available. Near Vale do Rossim Reservoir, you can find the Vale do Rossim River Beach Restaurant, which is a convenient spot for a meal or a drink after a hike or a day by the lake. It's noted for its nice location right on the lake.
While specific regulations for dog access vary, many natural park trails in Portugal are generally dog-friendly, provided dogs are kept on a leash and owners clean up after them. It's always advisable to check local signage or park regulations for specific areas within the Serra da Estrela Natural Park to ensure compliance.
Accessibility can vary significantly. While some areas might have paved roads leading to viewpoints, many trails around the lakes, such as the Covão dos Conchos Trail, involve uneven terrain, scree, and loose stones, making them challenging for those with mobility concerns. It's best to research specific locations and their conditions before visiting.
Covão dos Conchos is famous for its 'gigantic funnel' where the lagoon's water appears to disappear mysteriously. This intriguing effect is created by an old water intake built into the lake, diverting water through a tunnel. It has gained significant fame through drone videos showcasing this unique 'drainhole' phenomenon, making it a truly distinctive and memorable natural attraction.
Long Lake (Lagoa Comprida) is known for being the largest water reservoir in the Serra da Estrela, situated at approximately 1,600 meters altitude. It is of glacial origin, featuring numerous visible glacial scars along its banks, making it a significant geomorphological site. It also serves for hydroelectric power generation and offers breathtaking views.
Yes, the region offers challenging hikes. For instance, the Hidden cascade at Poço do Inferno is part of a challenging area, with the ascent to the cascade requiring good footwear and sure-footedness. The 'Wild Boar Trail' and 'Poço do Inferno Route (PR 1)' are also listed as difficult hikes in the Hiking around Manteigas guide.
You can find information on mountain biking trails in the region through the MTB Trails around Manteigas guide. This includes routes like the 'Serra da Estrela: Manteigas and Torre Loop' and the 'Great Zêzere Route', which offer challenging rides through the landscape surrounding the lakes.
Vale do Rossim Reservoir is a beautiful lake located at over 1,400 meters above sea level, characterized by granite, pine trees, and clear waters. It's a popular spot for strolls, summer swims, and simply admiring nature. Visitors can also enjoy activities like pedal boating and find dining options at the nearby Vale do Rossim River Beach Restaurant.
Yes, Manteigas is home to the Praia Fluvial da Relva da Reboleira, which is its only river beach. It is bathed by the cold waters of the Zêzere River and is part of a larger recreation and leisure unit that includes a ski slope, campsite, and picnic park, making it a versatile spot for relaxation and activities.
Visitors to the lakes around Manteigas highly appreciate the magnificent landscapes, the unique geological features like the glacial scars at Long Lake, and the intriguing phenomenon of Covão dos Conchos. The opportunity for outdoor activities, from easy strolls to challenging hikes, and the peaceful mountain scenery also receive high praise.


Still not found your perfect lake around Manteigas? Check out the guides of these regions to see even more beautiful places.