Category:Lago Ercina

Lago Ercina is one of the two glacial lakes that make up the Lakes of Covadonga, sitting in the municipality of Cangas de Onís within the western massif of Picos de Europa National Park in Asturias. Together with the neighboring Lago Enol, it forms the region's most iconic mountain scenery and ranks among the park's most visited spots.

Where is Lago Ercina and how did it form?

The lake sits at over 1,100 meters above sea level, cradled beneath the limestone peaks of the western massif. Its basin was carved out by glacial activity more than 25,000 years ago. Unlike many alpine lakes, Ercina is remarkably shallow — no more than 2 meters deep — and its waters are alkaline, making it the only water body of that type anywhere in the national park.

How do you get to Lago Ercina?

Access runs along a roughly 14.5 km road that climbs in switchbacks from the Royal Site of Covadonga up to the parking area by the lakes. During peak season, private vehicle traffic on this stretch is restricted and visitors are brought up by shuttle bus instead — a standard measure to keep the fragile mountain terrain from being overwhelmed.

What is there to do around the lake?

Ercina serves as the starting point for several walking routes. An easy, popular option follows the lakeshore to the herders' huts at Majada la Veguina, then continues on a shorter, slightly steeper stretch to Majada de las Bobias. Another path climbs to Mirador del Rey, a historic viewpoint overlooking both Enol and Ercina at once. More ambitious hikers use the lakes as a launch point for longer treks, including the route toward the Vega de Ario refuge or the longer traverse via Refugio de Urriellu down to Bulnes.

Why the lake matters ecologically

Because of its shallow depth and distinctive water chemistry, Lago Ercina functions as the park's principal wetland. It hosts a breeding colony of waterbirds that rely on the lake for shelter and food, which is why the shoreline is under special protection — swimming or disturbing the birds is not permitted.

Frequently Asked Questions

Can you swim in Lago Ercina? No. The lake is a protected wetland and bird refuge, so swimming and entering the water are prohibited.

How do you drive to the lake? Via the road from Covadonga, about 14.5 km long. During summer and other high-traffic periods, access is often limited to shuttle buses, so it's worth checking conditions before heading out.

Is the trail around the lake easy? The shoreline path to Majada la Veguina is mostly flat and suitable for hikers of average fitness; onward sections toward Majada de las Bobias or Vega de Ario are more demanding.

What's the difference between Lago Ercina and Lago Enol? Both are glacial lakes within the same complex, but Ercina is much shallower and alkaline — the only lake of its kind in the park — while Enol lies closer to the entrance road from Covadonga.