NPR Science: Beyond Sightseeing: You’ll Love The Sound Of America’s Best Parks.
“Every place has its own sound. A small group of scientists is hard at work recording the natural sounds of national parks all across the U.S. — more than 70 soundscapes so far.
For our series on the centennial of the national parks, we traveled to Colorado, to find out how they create these portraits of sound.”
I recommend listening to the seven minute article instead of just reading the (abbreviated, loose) transcript because there are a lot of sound clips.