The Ribeirão Santo Antônio is a river in Minas Gerais, Brazil, notable for its rocky course. It is a tributary of the Doce River and is used for leisure and tourism, including fishing and gold panning activities. The river is 28 kilometers long and features a network of distributaries and tributaries. For paddlers, specific access points, boat ramps, and facilities are documented, providing practical information for trip planning. The river's character is defined by its rocky bed, which suggests a varied flow and potential for technical sections, though the exact nature of the rapids is not detailed. The surrounding area's historical connection to gold panning adds a layer of cultural significance to the experience.