It really is worth getting here by 9am: the gangways are narrow and getting stuck in a conga line of tour groups in searing heat and humidity takes the edge off the experience.

Three circuits provide the falls viewing via a series of trails, bridges and pasarelas (boardwalks).

Close to the Circuito Inferior trailhead, the old park hotel houses a small falls museum but it won't hold your attention for long considering what awaits outside.