This itinerary allows us to visit the western part of the Aigüestortes and Estany de Sant Maurici National Park, crossing the Sant Nicolau valley from west to east. We will enter the area of Aigüestortes, on wetlands and black pine forests, with the constant murmur of the river. With our restful step we will advance by the bottom of the valley until the head, where they dominate the alpine meadows and we will discover beautiful lakes of glacial origin. From this point of view, the breathtaking views fill your heart with joy. Among the highest peaks we will see is the Portarró d’Espot, mountains that preserve the memory of transhumance and merchants of the Pyrenees from east to west. Duration of approximately 5 hours in the morning and very easy.