The Vigário Waterfall, also known as the Alte Waterfall, is an impressive 24-meter-high waterfall located on the Alte stream. It is an idyllic spot in the region, ideal for relaxation and enjoying nature. This waterfall is fed by underground waters that emerge at the Alte springs upstream, which are part of the Querença-Silves aquifer system, the largest underground reservoir of fresh water in the Algarve.

The underground waters circulate through the fractures and cavities of the Lower Jurassic limestone rocks, reaching the surface due to contact with the less permeable rocks of the Volcanic-Sedimentary Complex. This geological formation is linked to the volcanic episode that occurred at the beginning of the separation of the supercontinent Pangaea. When the waters from the Alte stream—enriched with carbonates—come into contact with the air, calcium carbonate (calcite) is deposited on various materials present along the banks and on the stream channel floor and margins. This process gives rise to limestone tuffs, where preserved remains of plants such as grasses, moss, olive leaves (Olea europaea), and oak leaves (Quercus) can be found.