Along the Eng. Duarte Pacheco’s dam, the river Caima reserves a unique and beautiful surprise: on the left bank of the reservoir, a little waterway is drawn between leafy forests, moving sinuously to keep the right gap to the constant flow of water. The flow, with just over 1 km, serves the irrigation fields of Santa Cruz, and originates in a small tributary of Caima river which flows into the Pisão’s well. The genius of people is patent on this unique work, which leads the water from the steep lands of Caima margins to the flattening corn lands, surrounding the town of Santa Cruz. This waterway is identical to Madeira waterways and provides, in warmer weather, a cool shady walk under the oaks, accompanied by the stubborn run of clear waters of this mountain river.