Length of PR1: 7,4km (one way) Time it takes: 3.5-4 hours (one way) Difficulty: Moderate Min/max altitude: 1491m / 1857m Pico do Arieiro and Pico Ruivo are two of the highest peaks in Madeira with Pico Ruivo being the highest. The PR1 levada walk is a stunning trail that connects these two peaks. For some part of the hike you will be walking on the ledge (with railings) and other part of the hike you will either be walking on the side of the mountain or through man-made tunnels.