The Cascata das Andorinhas is located in southern Brazil , in Rio Grande do Sul state , near the city of Rolante 120 km from the state capital, Porto Alegre. The casacata is located at the beginning of the Serra Geral, large rock formation that stretches across Brazil . I arrived there in the early afternoon and over time the sun was focusing increasingly within the Cascade well, to get in the water allowing this light reflecting on the rock to the left .