I always prefer the indigenous people's place names for natural features so from now on, I will use their name for the gorge, Nitmiluk.
Katherine Gorge is part of the Nitmiluk National Park and is actually 13 separate gorges that have been carved out of the ancient sandstone country by the Katherine River. The boat cruise visits the the two lower gorges.
Don't bother to comment. Just enjoy you visit to this ancient landscape.
@pusspup I wanted to get these shots posted before I went to bed last night and in the rush, put up this one and another that were from much later in the boat trip. In other words, they are out of order!!! Gasp!! I'm a shattered man. It upsets my sense of good order and military discipline. :-(