Venus Billabong #1, Victoria, Australia

(Click image to enlarge)

A billabong (/ˈbɪləbɒŋ/ BIL-ə-bong) is a small body of water, usually permanent. The name is most likely derived from the Wiradjuri language of southern New South Wales, which "describes a pond or pool of water that is left behind when a river alters course or after floodwaters recede". It is often an oxbow lake caused by a change in course of a river or creek, but other types of small lakes, ponds or waterholes are also called billabongs.

Here Stony Creek flows across a large undulating rock surface forming a number of permanent pools that are roughly a meter (3.3 feet) deep. The largest such pool is shown in the above photograph. The pools remain when the creek is not flowing. In higher flow situations this vantage point is under water and very slippery. The area is most photogenic and accessible when the water is not flowing or the flow is minimal.