Rio Roncador is a river in the Chapada Diamantina region of Bahia, located between the towns of Lençóis and Andaraí. It is best known for its pink sandstone formations, which erosion has carved into a series of natural pools, small waterfalls, and smooth rock slides — features locally referred to as "caldeirões" or natural jacuzzis. The water is clear and suitable for swimming throughout the pools.

The standard approach to the river is via the Quilombola community of Remanso, reached by approximately 30 minutes on asphalt road followed by an hour on dirt road from Lençóis. From Remanso, paddlers and visitors board a canoe or small boat and travel roughly 1.5 hours through the Marimbus wetland — a large flooded area formed by the convergence of Rio Santo Antônio and Rio Utinga — before reaching the Roncador area. The Marimbus section features calm, maze-like waterways threading through aquatic plants and water lilies, with the Serra do Sincorá mountains as a backdrop. Wildlife visible along this stretch includes birds and Capuchin monkeys; capybaras and caimans are occasionally spotted as well.

After the canoe portion, a roughly 20-minute walk leads to the Roncador pools and waterfall. The name "Roncador" derives from the sound of water striking the rocks. Return to Remanso can be made either by canoe or on foot through forest trails, with the foot crossing of the river itself done on foot when water levels are low, or by boat when levels are high — indicating that water levels vary seasonally and can affect access.

The overall difficulty of the full-day outing is rated low (level 2 out of 5), and it is suitable for most visitors. Tours are typically organized out of Lençóis and are guided, often with community guides from Remanso. Lunch is served at an old farm along the route. The trip is commonly run as a full-day excursion of approximately 8 hours. Independent access to the river is possible via trail, with the trailhead reachable by vehicle, though guided canoe tours through Marimbus represent the most common approach.