Seven Holes Waterfall (中文版：七孔瀑布)is a multi-tiered waterfall in Pingtung, Manzhou County, about 30 minutes from Kenting old street. When I last visited in 2013, there was a fee of 20nt per person for parking.
It only takes 2 minutes to get to the waterfalls. From there you can use the ropes to climb up and check out all 7 holes. From the bottom to the last tier is about 200 hundred meters.
The first set is small, but it's still possible to climb up and jump into it.
The next set of holes is the most interesting. It's a good place to relax and enjoy the view, and it's deep enough to swim in or jump into it from the waterfall above.
There are two more waterfalls up the trail, but neither are deep enough to swim in.
Seven Holes Waterfall
Pingtung County, Manzhou County
Waterfall: 22.02688, 120.79973
Parking: 22.02568, 120.80136
Detailed Map: https://goo.gl/zSwzFq