evidence: Yet, like rivers from other environments, these rivers flowing in cratonic areas may exhibit river terraces with rounded gravel, suggesting different hydrological regimes and climatic environments in the past [ 4, 5]. We present here a case study on the terraces of the Suriname River in the Guiana Shield in tropical South America, with a drainage basin wholly covered by tropical rainforest. It is known from palynological studies that the Guiana Shield has suffered periods of greater drought and lesser vegetation cover [ 6, 7]. The study of terraces in this environment, however, is hampered by several factors, including low uplift rates, deep sediment weathering, and a scarcity of datable material. [...] Figure 1). The first group consists of the border rivers Marowijne (East) and Courantyne (West), which have their sources in the border mountains with Brazil and drain almost 58% of the country. The second group has their origin in the high uplands in the middle of the country, and is represented by the Suriname and Coppename Rivers, which drain almost 24% of the country and debouch directly into the sea. The third group consists of the Commewijne, the Saramacca, and the Nickerie Rivers, that together drain approximately 16% of the country. The rivers of the last group bend westwards close to the coast to drain into the sea through the mouths of the second group, due to the westward migration of important mud banks along the coast [ 17, 18]. [...] The Suriname River valley has a total length of 480 km and has its sources in the highlands (