This is Alberta Falls, one of the most popular destination hikes within Rocky Mountain National Park. It is an easy 1.7 miles from the Bear Lake parking area. It is alway crowded, but very beautiful. It’s especially breathtaking when the water flow is high so I suggest visiting in late June, which is when this photo was taken.
I recommend making this a stop on the hike and continuing on to Mills Lake, the Loch, or if in the mood for a full day’s hike, Sky Pond as your destination.