Located 50km south of Bonito, the Buraco das Araras is a giant doline (or sinkhole) more than 100m deep and 05.km across.

BBC: Livin�� la vida Bonito

Each day, when the first rays of sun warm its ochre walls, the doline comes alive with the sounds of the red-green macaw, as formations of these exotically-plumaged parrots dive and wheel below the lip, periodically alighting en masse to bicker, preen and survey their domain.

BBC: Livin�� la vida Bonito