Venezuela is connected to the world primarily via air (Venezuela's airports include the Simón Bolívar International Airport in Maiquetía, near Caracas and La Chinita International Airport near Maracaibo) and sea (with major sea ports at La Guaira, Maracaibo and Puerto Cabello). In the south and east the Amazon rainforest region has limited cross-border transport; in the west, there is a mountainous border of over shared with Colombia. The Orinoco River is navigable by oceangoing vessels up to inland, and connects the major industrial city of Ciudad Guayana to the Atlantic Ocean.