Butterbox Point is a shortish walk from the car park at the end of Mt Hay Road, but the views on offer are extensive, and there’s a few rocky outcrops that add to the experience. You can also do the walk up nearby Mt Hay in the same outing; we did on this day but because it was so misty we went back up Mt Hay two days later when it was gloriously sunny. Views are of the Grose Valley and the cliffs that line it.
A straightforward walk, you just keep to the left when the track forks near the start. Mt Hay is to the right. Here’s a link to that spot on Google Maps. Return the way you came. I think there’s also Canyoning to be done in the area.