The Waikato River, New Zealand’s longest river, moves gracefully north from Lake Taupo between banks 100 metres apart. Just before the Huka Falls it enters a shallow ravine of hard volcanic rock. The effect is nature’s large-scale equivalent of a fire hose feeding into a very fine nozzle.
At Huka Falls you can witness the phenomenon of natural hydro power – more than 220, 000 litres of water per second.
Take a look at what others did for this challenge by visiting http://nadiamerrillphotography.wordpress.com/2014/03/26/a-photo-a-week-challenge-from-above/