A large mirror of water surrounded by grassland, farmland and tourist accommodation, the Laguna Azul owes its name to the turquoise colour of its waters, particularly between September and March. The lagoon is also known as Mamacocha (Mother of the Waters, in Quechua), as it is the largest body of water in the area, measuring 5 km (3 miles) in length and almost 2 km (1.2 miles) in width.
The beauty of the lagoon can be enjoyed by travelling to Sauce district, just an hour and a half from Tarapoto, in San Martín department.
Species that can be seen include the famous kingfisher, herons, sachapatos, eagles, amphibians, reptiles and fish.
Visitors also have the opportunity to rent accommodation overlooking the lagoon. Tours around the lagoon by boat, canoe or sail boat are available. Visitors can also go on guided hikes to the town of Dos de Mayo or to nearby waterfalls, including the Pukayaku.