Rocky Mountain Nat'l Park, Colorado
The Roaring River cascading through the Alluvial Fan area of the Rocky Mountain National Park, Colorado.
From the national park's web page:
Feel Like You’re On Top of the World!
Rocky Mountain National Park’s 415 square miles encompass and protect spectacular mountain environments. Enjoy Trail Ridge Road – which crests over 12,000 feet including many overlooks to experience the subalpine and alpine worlds – along with over 300 miles of hiking trails, wildflowers, wildlife, starry nights, and fun times. In a world of superlatives, Rocky is on top!