[1] The cave is a limestone cavern over 10 km (6.2 mi) long, with a number of large chambers and spectacular rock formations.

The Spanish name guácharo is onomatopoeic, and comes from an old Castilian word for one who shrieks or cries, because of their characteristic sound.

The most important daily event in the park occurs in the evening, as dusk falls, when the birds exit the cave in great flocks, in search of food.

The national park is part of Cordillera de Caripe Alliance for Zero Extinction (AZE) site, along with another IBA, the Zona Protectora Macizo Montañoso del Turimiquire.

[note 1] It offers information about the cave, the national park, the oilbird (guácharo), and Alexander von Humboldt.