Apparently, this is a photo of:

"Abiqua Falls - located near Scotts Mills, Oregon, about an hour and a half south of Oregon City. It's a popular waterfall due to its scenic beauty and relatively easy accessibility.

The falls are on private property owned by Mt. Angel Abbey, but the public is graciously allowed access. The hike to the falls is short but steep, and the trail can be muddy at times. However, the reward is a view of the 92-foot waterfall cascading down into a beautiful emerald green pool."

Where was this taken?! Looks great.