glen helen gorge
  carved through the Pacoota Range by the Finke River as its floodwaters rush south to the Simpson Desert, Glen Helen Gorge has a large permanent waterhole, one of only six such permanent waterholes along the 600 km Finke River System, and such are essential for the survival of native fishes in Central Australia  
  Glen Helen Gorge, West MacDonnell National Park - 18th September 2006