Best lakes around Alvoco Da Serra are situated within the Serra da Estrela Natural Park, an area characterized by its mountainous terrain and glacial origins. The region features several notable aquatic destinations, including natural lakes and man-made reservoirs. These bodies of water contribute to both the scenic beauty and the hydroelectric infrastructure of the area. The landscape offers diverse geological features and opportunities for outdoor activities.
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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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 region is rich in diverse natural features. You'll find high-altitude glacial lakes like Long Lake, which showcases significant geomorphological interest with its glacial scars. There are also unique man-made structures like the funnel at Covão dos Conchos Trail, which creates a fascinating optical illusion. River beaches such as Poço do Lagar and Praia Fluvial de Alvoco das Várzeas offer lush greenery, clear waters, and serene environments, often surrounded by ancient trees and impressive granite formations.
Yes, several spots are great for families. Vale do Rossim Reservoir is known as a recreation area perfect for strolls and summer swims. Poço do Lagar River Beach offers amenities like picnic tables, a barbecue area, and restrooms, making it comfortable for families. Praia Fluvial de Alvoco das Várzeas is also very accessible, featuring a picnic park, lifeguard, accessible ramps, and even an amphibious chair.
The lakes and surrounding areas offer a wide range of outdoor activities. You can enjoy hiking, mountain biking, and running on various trails. For example, near Long Lake, you can find MTB routes like the Covão do Curral Lagoon loop. The Covão dos Conchos Trail is popular for hiking, and many visitors enjoy a short swim in the reservoir after their walk. For more detailed route information, you can explore guides like Hiking around Alvoco Da Serra, MTB Trails around Alvoco Da Serra, and Running Trails around Alvoco Da Serra.
Yes, many of the aquatic spots are suitable for swimming. Poço do Lagar River Beach and Lapa dos Dinheiros River Beach are known for their clear and refreshing waters, ideal for a dip during warmer months. The reservoir at Covão dos Conchos Trail also allows for a relaxing swim after a hike. Additionally, Poço da Broca de Serapitel features a beautiful bathing pool beneath a waterfall.
The warmer months, typically spring through early autumn, are ideal for visiting the lakes and river beaches, especially if you plan to swim or enjoy water sports. During these times, the weather is pleasant for hiking and outdoor activities. However, the landscapes around places like Covão dos Conchos Trail are magnificent on clear days year-round, offering different beauty in each season. Be aware that some paths, especially in autumn or after heavy rain, can be challenging with loose stones and require appropriate footwear.
Yes, Praia Fluvial de Alvoco das Várzeas is classified as an accessible beach. It provides an amphibious chair, information in braille, accessible ramps, and facilities like parking, restrooms, and showers, ensuring a comfortable visit for everyone.
Good walking shoes are highly recommended due to paths that can be covered with loose stones, scree, and uneven terrain, especially around areas like the Covão dos Conchos Trail. In sunny weather, sun protection is essential as there is often no shade on the trails. It's also advisable to bring enough food and drink, as amenities might be sparse in some remote areas.
Covão dos Conchos Trail is famous for its remarkable man-made funnel within an artificial lagoon. This spillway, part of the Serra da Estrela hydroelectric system, creates an optical illusion, appearing as if the lake is draining through a giant hole. The surrounding landscapes are magnificent, making it a truly unique and memorable site.
While the immediate vicinity of some high-altitude lakes might be remote, areas like Vale do Rossim Reservoir offer options. The Vale do Rossim River Beach Restaurant is located right on the lake, providing a place to eat and drink. There are also accommodation options like the Vale do Rossim Eco Resort nearby, offering camping, yurts, or wooden cabins. River beaches like Poço do Lagar also have amenities such as a bar.
Long Lake (Lagoa Comprida) is the largest water reservoir in the Serra da Estrela, situated at approximately 1,600 meters altitude. It's significant for its glacial origin, occupying a wide depression that once fed the Covão Grande glacier, and for its crucial role in hydroelectric generation. Its banks display numerous glacial scars, making it a key geomorphological site in the region.
Visitors frequently praise the magnificent landscapes, especially the blue skies and the refreshing temperatures at altitude. Many enjoy the unique sights like the 'drain' at Covão dos Conchos Trail and the serene beauty of places like Vale do Rossim Reservoir. The opportunity for summer swims, relaxing after a hike, and the impressive geological features are also highly appreciated.


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