Den Fenella Falls is a series of very pretty cascades that culminates in a drop over the main cliffline near Den Fenella Lookout. Fed by Den Fenella creek that flows through Den Fenella Glen, they don't always have a good flow but on the day I visited, they had a small, but nice flow happening, making them quite pretty to visit.
An easy 15 minute or less walk from the Wentworth Falls Carpark on for the most part, a good walking track with stepping stones and sandstone steps. One of the prettier, but less-visited places around Wentworth Falls, this just makes it more peaceful!