The Tumuk Humak Mountains (Dutch: Toemoek-Hoemakgebergte, Portuguese: Serra do Tumucumaque, French: Monts Tumuc Humac) are a mountain range in South America, stretching about 120 kilometers (75 mi) east–west in the border area between Brazil in the south and Suriname and French Guiana in the north. In the language of the Apalam and Wayana peoples, Tumucumaque means "the mountain rock symbolizing the struggle between the shaman and the spirits".