evidence: The Maroni (French: [maʁɔni]) or Marowijne (Dutch: [maːroːˈʋɛinə]; Sranan Tongo: Marwina-Liba) is a river in South America that forms the border between French Guiana and Suriname. Course [edit]The Maroni runs through the Guianan moist forests ecoregion.[1] It originates in the Tumuk Humak Mountains and forms the (disputed) border between France (region of French Guiana) and Suriname. In its upper reaches, it is also known as the Lawa, and close to its source it is known as the Litani. The total length of Litani, Lawa and Maroni is 612 km (380 mi).[2] [...] Exploration [edit]The Maroni is the most extensively studied of all the rivers in Suriname. In the 16th century, there were already ships exploring the estuary, by Lawrence Keymis, Thomas Masham, Antonio de Berrio and Adriaen Cabeliau[3] and in the 17th century, by Harcourt, Fisher and De Vries. In the 18th century more extensive excursions took place, by Mentell, Patris, Le Blond and Heneman and in the 19th century by Zegelaar, Jules Crevaux, Coudreau, Ten Kate, Joost and others.