Ibón de Escarpinosa — The Sapphire of Benasque

Hidden in the Estós Valley near Benasque, the Ibón de Escarpinosa is often cited as the most beautiful alpine lake in the Pyrenees. This out-and-back trail climbs through a classic Pyrenean landscape of black pine forests (Mugo pine) and turquoise rivers. The lake itself is a sapphire jewel, perfectly reflecting the sharp Agujas de Perramó (Perramó Needles) and surrounded by mossy boulders and rhododendrons. It is a more intimate, botanical hike compared to the high-altitude austerity of the central massifs.

The trek to Laguna de los Tres is one of the primary day activities in Los Glaciares National Park, providing a close-perspective view of the granite massif of Mount Fitz Roy (3,405m). The route follows an out-and-back trail through mixed forest and glaciated valleys, passing the Piedras Blancas viewpoint before the final ascent. The journey is defined by a significant transition from the low-lying valley floor to the high-alpine environment of the lagoon, which sits directly below the main peaks.