The trail follows alongside the Levada do Rei, begins at the Water Treatment Plant at Quebradas in São Jorge, ending at the source of the levada in the spectacular area of Ribeiro Bonito. The first part of the trail crosses a forested area where some specimens of indigenous vegetation are found here and there. The second part of this trail is covered with luxious vegetation giving testimony to the importance of this levada to Madeira's cultural heritage. At Ribeiro Bonito, you'll come across a true sanctuary of nature. This is one of the most beautiful areas of Laurisilva forest-classified as a World Natural Heritage site by UNESCO since December 1999, the surrounding scenery leaves you with the sensation of having gone back in time to the discovery to the island. Be sure to visit the São Jorge water mill (moinho), which is about three hundred years old. This mill is a good example of preservation, and powered by the water from the Levada do Rei, it grinds wheat, maize, barley and rye grown on the terraces of São Jorge.