It's estimated that Cueva del Guácharo, Venezuela's largest cave, has at least 9 km (5½ mi) of subterranean passageways. Groups are led into the dank caverns by guides who tote kerosene lanterns so as not to upset the light-sensitive guácharos—a nocturnal species of fruit-eating birds. Visitors are not allowed to bring anything inside, including purses, flashlights, or cameras. To reach the cave from Cumaná, take Highway 9 south toward Caribe for about 65 km (40 mi) and follow signs; there are bathrooms, guided tours, and a a visitor center available at the mouth of the caves.
Parque Nacional El Guácharo, Cumaná, Venezuela