Undine Falls
  Yellowstone National Park, Wyoming 
  
  
  
Took this with my 12-year old son.. he wanted to learn how to take those "sort of blurry waterfall photos"... here it is. We'll call this one his. 
More to come... if you are interested, more photos from this area, you can find them Here
PLEASE CLICK ON ORIGINAL BELOW TO SEE AT FULL SIZE