Hwy 89 from Browning to the St. Mary entrance of the park. About 10-12 miles further on is a pullout and parking area for the Sunrift Gorge view. This falls is located almost directly underneath the bridge.
The ND filter coupled with the polarizer helped create a "silky" look to the water. Even during the summer, the weather is subject to change, so always bring not only rain gear, but fleece clothing and a good pair of hiking boots. Remember to bring some rain cover for your camera and lens as well.
I was fascinated by the hues of greens at an unnamed little waterfalls on the trail to Sunrift Gorge. I cropped this shot to focus more on the textures and colors. It had been raining all morning long, so the rocks and vegetation were even more color-saturated.