I did a hike on a mountain ridge in Hawaii (Stairway to Heaven), and was very shocked by how loud the highway below was. I was maybe 3000 feet above. The sound was amplified from from the valley below, the mountain sides almost acting like walls of a speaker.
It's something that I don't think gets enough attention, the way light pollution does. But its' definitely a problem in some places. And I can see how it would disrupt bird calls.
It's something that I don't think gets enough attention, the way light pollution does. But its' definitely a problem in some places. And I can see how it would disrupt bird calls.