This is a perfect stage for the practice of cyclo-tourism, which allows to know and observe some of the peculiarities that make the lagoon area of Baixo Vouga a mosaic of ecosystems and biotopes of high ecological and socio-cultural value. We take our first steps along the Olympic Rowers' Dock, also known as São Roque Channel, gradually leaving the center of Aveiro towards the Ribeira de Esgueira Pier and the beginning of about 7km of footbridges over the Ria (Passadiços de Aveiro) that allow us the opportunity to get to know this marshland area with a proximity and familiarity until then only available to the small boats found along this entire route. In the Canal do Rio Novo do Príncipe we find the Vouga River in its last breath before it flows into the Ria de Aveiro and, crossing its riverbed, we get into a very special habitat, typical of this area, the "Bocage". Man-made and built, it is made up of cultivated fields, pastures, fallow land and water lines, separated and limited by shrubby vegetation. The rice is cultivated in the Canelas and Salreu fields, in a labyrinth that must be travelled to reach BioRia - Environmental Interpretation Center.