Which land form in Brazil discouraged people from settling the regions vast interior?

The Brazilian Highlands, characterized by their rugged terrain and elevated plateaus, discouraged settlement in the vast interior of Brazil. This region's steep slopes, rocky outcrops, and limited access to water sources made agriculture and transportation challenging. As a result, many early settlers preferred to inhabit the coastal areas, where the land was more fertile and accessible. Additionally, the dense rainforests and tropical climate further complicated settlement efforts in the interior.