Lake Enol is the larger of the two, reaching a maximum depth of approximately 25 meters.
The lakes are situated within Spain's first established national park, founded in 1918.
The sanctuary of Covadonga, located at the base of the ascent, holds significant historical importance as the site of the Battle of Covadonga in 722 AD.
The water in the lakes originates primarily from snowmelt, which creates seasonal fluctuations in volume.
The road leading to the lakes is one of the most iconic climbs in professional cycling, often featuring gradients exceeding 10%.
The area serves as a primary habitat for the Cantabrian chamois and the bearded vulture.
Unlike Lake Ercina, Lake Enol never completely dries up, even during severe drought conditions.
The Lakes of Covadonga, located in the Picos de Europa National Park, comprise two glacial lakes known as Enol and Ercina. Lake Enol sits at an altitude of 1,070 meters, while the smaller Lake Ercina sits at 1,108 meters. These lakes are of glacial origin and represent a critical part of the Picos de Europa ecosystem in Asturias. The site is a renowned stage for the Vuelta a España cycling race due to its steep, challenging ascent. Surrounding the lakes are limestone peaks and high-altitude pastures still used for traditional cattle grazing. A third, smaller lake named El Bricial only fills during heavy rain or snowmelt. The entire area is designated as a protected biosphere reserve by UNESCO.
The ridgeline trail between Lake Enol and Lake Ercina offers a vantage point capturing both bodies of water with the Picos de Europa peaks in the background.
Wear sturdy, broken-in hiking boots, as the terrain around the lakes is uneven, rocky, and often muddy.
Bring layers, as mountain weather in the Picos de Europa can shift from sunny to foggy and cold in minutes.
Stay on marked trails to protect the fragile alpine meadow ecosystem and avoid encounters with grazing livestock.
Attempting the ascent in a private vehicle during high season, as the road is restricted to public transport and official buses.
Access by private vehicle is strictly restricted during peak summer months and major holidays, requiring mandatory use of an official bus service.
No swimming or water sports allowed in the lakes to protect the glacial water quality; keep a respectful distance from grazing cattle.
