Well I was thinking about going under the waterfall... From the pictures the height of the waterfall seems to be around 20-25ft. and one could try getting beneath(Maybe not under the bigger/heavier portion of waterfall but on a side with smaller stream of water falling) but only if the water below is not deep enough to drown one. Although I know swimming but still it will be a great risk to challenge two forces of nature in one go ( Gravity for drowning and Kinetic energy for knocking me out).... 
So I guess I will make a BBQ trip to this area in the near future..... 