The Mazaruni River flows over three distinct habitats; the flat tops of Roraima Plateau, known in Venezuela as “tepuis”, the lower two plateaus and the low lands. Each habitat is characterised by its own vegetation. The upper one is a fantastic land of rain swept sandstone eroded into fantastic forms with exotic plants trying to survive this inhospitable land of denuded rocks. The middle one is mainly savannas with bands of single canopy jungle, the lowest is a triple canopy jungle. Exotic orchids are found in last two habitats.
