We will meet at the Boí taxi rank, from where a taxi will take us to the start of the route, in the Aigüestortes i Estany de Sant Maurici National Park. We will start walking in the Planell d’Aigüestortes, following the course of the Sant Nicolau River along a pleasant path between forests and high mountain landscapes. We will cross the wooden walkways that run along the characteristic meanders of the river before returning to Planell d’Aigüestortes. From there we will continue the descent by the river along a mountain path until we reach the Estany de Llebreta, one of the most emblematic corners of the Sant Nicolau Valley. At Estany de Llebreta we will finish the hike and take a taxi back to Boí. Distance : 3.3 km / 2 mi | Elevation gain/loss : 34 m +/ 225 m -// 111 ft +/ 738 ft -