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São Martinho

Top 10 Lakes around São Martinho

Best lakes around São Martinho are primarily found within the Serra da Estrela Natural Park, a mountainous region in central Portugal. This area is characterized by its high-altitude landscapes, glacial valleys, and significant water reservoirs. The natural environment offers a diverse range of aquatic features, from dammed lakes to natural lagoons, providing varied experiences for visitors. The region's terrain includes granite formations, pine forests, and unique ecosystems.

Best lakes around São Martinho

  • The most popular lakes is Long Lake,…

Last updated: October 4, 2026

Covão dos Conchos Trail

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We meet a lot of people on the route, especially on August 16, the trail is easy but many areas of scree require good shoes and flexible ankles. The landscapes …

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Long Lake

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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.

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Vale do Rossim Reservoir

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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. …

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Very nicely located here you can fortify yourself well

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Lagoa do Peixão

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The Lagoa do Peixão, sculpted by ice from ancient times, has an almost mystical aura. In spring, the spectacle becomes even more mesmerizing, with thousands of dragonflies dancing on the …

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Pacmen64 🇵🇹
October 12, 2025, Covão dos Conchos

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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The Lagoa do Peixão, sculpted by ice from ancient times, has an almost mystical aura. In spring, the spectacle becomes even more mesmerizing, with thousands of dragonflies dancing on the water, while tree frogs croak on the edge of the lake, composing a perfect natural symphony. The view from here is breathtaking. The imposing rocky peaks of Fragão do Poio dos Cães and Cântaro Gordo emerge on the horizon, reminding you of the ancient glaciers that once shaped this stunning landscape.

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Frequently Asked Questions

What kind of natural features can I expect to see around the lakes near São Martinho?

The lakes around São Martinho, primarily located in the Serra da Estrela Natural Park, are characterized by high-altitude landscapes, glacial valleys, and significant water reservoirs. You'll encounter granite formations, pine forests, and unique ecosystems. Highlights like Long Lake showcase glacial depressions and scars, while Vale do Rossim Reservoir is known for its clear waters and granite surroundings.

Are there hiking trails near the lakes around São Martinho?

Yes, there are several hiking opportunities. The Covão dos Conchos Trail is generally considered easy and offers magnificent landscapes. For a more challenging experience, the Trail to the Upper Lakes, Serra da Estrela Natural Park, provides stunning views but can be overgrown in parts. You can find more hiking options in the Hiking around São Martinho guide.

What is the best time to visit the lakes around São Martinho?

Visiting in summer allows for activities like swimming at Vale do Rossim Reservoir. However, the region offers beauty year-round; for instance, October can provide beautiful days for walks like the Covão dos Conchos Trail, though paths might be wet after rain. Be aware that some trails, like the Trail to the Upper Lakes, can be overgrown in spring (e.g., May).

Are there family-friendly activities or lakes suitable for families?

Absolutely. The Covão dos Conchos Trail is considered family-friendly. Vale do Rossim Reservoir is also great for families, offering strolls and summer swims. Additionally, the Vale do Rossim River Beach Restaurant is a family-friendly spot right by the lake.

Can I swim in the lakes around São Martinho?

Yes, Vale do Rossim Reservoir is known for its clear waters and is suitable for summer swims. The tips also mention short swims in the water reservoir of the dam after walks, referring to the area around Covão dos Conchos.

What makes the Covão dos Conchos Trail unique?

The Covão dos Conchos Trail is famous for its unique water feature: a man-made funnel that appears to drain the lake, creating a captivating visual effect. The trail itself is easy, offering magnificent landscapes and views of the water reservoir.

Are there places to eat or stay near the lakes?

Near Vale do Rossim Reservoir, you'll find the Vale do Rossim River Beach Restaurant, which is a great spot to refuel after a hike. For longer stays, the Vale do Rossim Eco Resort offers camping, yurts, or wooden cabins with half-board options.

What are the difficulties of the hiking trails near the lakes?

Trail difficulties vary. The Covão dos Conchos Trail is generally considered easy, though it has many loose stones requiring good footwear. The Trail to the Upper Lakes, Serra da Estrela Natural Park, is rated as challenging and can be overgrown in sections, sometimes requiring navigation using stone markers. Always wear good walking shoes and bring enough food and drink.

Can I do mountain biking near the lakes?

Yes, the region around São Martinho offers mountain biking trails. For example, you can find routes like the 'Covão do Curral Lagoon – Lagoa Comprida Dam loop' which is a moderate MTB trail. Explore more options in the MTB Trails around São Martinho guide.

What is the significance of Long Lake?

Long Lake (Lagoa Comprida) is the largest water reservoir in the Serra da Estrela, located at approximately 1,600 meters altitude. It originated from a glacial depression and is significant for hydroelectric generation. Its banks display numerous glacial scars, making it an interesting geomorphological site.

Are there easy walks around the lakes?

Yes, there are several easy walks. For instance, you can enjoy easy loops around Vale do Rossim Reservoir and Long Lake. The Easy hikes around São Martinho guide provides more details on these routes.

What kind of views can I expect from the lakes?

The lakes offer magnificent views, especially with clear skies. From Covão dos Conchos Trail, you get panoramic views of the water reservoir. Long Lake also provides nice vantage points over the water and surrounding mountainous terrain.

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

Serra da EstrelaNational Park Serra EstrelaSabugueiroLorigaManteigas (São Pedro)São RomãoValezimSeiaLapa Dos DinheirosAlvoco Da SerraMangualde Da SerraSeiaManteigasManteigas (Santa Maria)Aldeias e Mangualde da Serra e Mangualde da Serra e Mangualde da SerraSazes Da BeiraCabeçaGouveiaPaços Da SerraVila Cova À CoelheiraSameiroTorrozeloSantiagoSandomilVide e Cabeça e Cabeça e CabeçaGouveia (São Pedro)Santa Marinha e São Martinho e São Martinho e São MartinhoTeixeira

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