The Rio Maú, also known as the Ireng River, is a significant waterway forming part of the international border between Brazil's state of Roraima and Guyana. It flows for approximately 365 kilometers through the region. The river is situated near the Monte Roraima National Park, a protected area established in 1989, which suggests a setting of significant natural and scenic value. For paddlers planning a trip, resources exist that detail access points, boat ramps, and other necessary facilities to help organize a day on the water. The river's role as a border watercourse and its proximity to a national park imply that paddlers should be prepared for a remote and potentially regulated environment. It is advisable to research specific border zone regulations and any park-specific rules regarding water access prior to embarking. The length of the river allows for extended multi-day expeditions, and the surrounding geography, influenced by its location near the iconic Monte Roraima plateau, likely contributes to a dramatic and unique aesthetic characterized by tabletop mountains and dense tropical landscapes.