Geosite Lagoa do Peixão
Discover the high-altitude glacial wonders of the Estrela Geopark
Lagoa do Peixão is one of the most significant and visually striking geosites within the UNESCO Estrela Geopark. Situated at an elevation of approximately 1,660 meters, this lagoon is a testament to the powerful glacial forces that shaped the Iberian Peninsula during the last glaciation. Unlike the more famous Lagoa Comprida, Lagoa do Peixão remains relatively isolated, offering a wilder and more authentic experience for nature enthusiasts.
The lagoon sits within a glacial cirque, a bowl-shaped depression carved out by the movement of ancient glaciers. The surrounding landscape is dominated by massive granite outcrops and 'piornos' (shrubby vegetation), creating a high-mountain atmosphere that feels worlds away from the city. For guests at Starbase18 in Meios, a trip to this geosite involves a scenic drive toward the heart of the mountains followed by a rewarding hike. The crystal-clear waters and the absolute silence of the high plateau make it a premier destination for photography and mindful exploration.
Geologically, the area provides a clear view of glacial moraines and polished rock surfaces, which are essential for understanding the environmental history of the region. Visitors are encouraged to bring plenty of water, wear sturdy mountain boots, and respect the fragile alpine ecosystem by staying on marked paths.
