Barrs Falls is an 5m waterfall that flows down old volcanic cliff giving it a rather unusual character. Despite the sign indicating it's some 10 minutes of walking to see it, I swear it didn't take me anywhere close to being that long for the entire return walk! The falls is near the town of Owaka in the Catlins Forest Park.
For more information on this waterfall such as...
maps
directions
detailed descriptions
refer to A Guide to New Zealand Waterfalls (Story Nature Press).