The Rio Chapena is a river located in the Bonito region of Mato Grosso do Sul, Brazil. A primary access point for paddlers and other water activities is the Fazenda Ceita Corê, a private farm property. The river's most notable geographical feature is its source, known as the Nascente do Chapena. This is a flooded cavern, or cave spring, with a confirmed depth exceeding 155 meters. The river flows through the farm's grounds, which feature waterfalls and natural springs, contributing to its scenic character. The area is used for flutuação, a popular Brazilian activity of floating or snorkeling in clear rivers, indicating the water is typically very clear and suitable for observing the underwater environment. As the river is situated on private land at this key access point, paddlers should be aware that entry, regulations, and any available facilities would be managed by the Fazenda Ceita Corê. The region's tropical climate suggests water temperatures are likely warm year-round, with the dry season typically offering the most stable conditions for water activities. The overall paddling experience is centered around the river's exceptional water clarity and unique karst geology, including its profound cave spring origin.