Welcome to "the quietest square inch in the wilds of America, discovered by Gordon Hempton.
The quietest inch isn't a sound vacuum. It represents a place with a minimum of human-made noise. The discipline of acoustic ecology, which is dedicated to understanding the natural sounds that come through loud and clear when we're not around, outlines an important distinction between sound and noise. The blip of water droplets from a forest canopy? Sound. The tinny din of Taylor Swift through smartphone speakers? Noise. For example, the inch, as it's often called, is exposed to flute-like bugling from Roosevelt elk, the Morse-code chirp of the American Dipper, and assertive hooting from the endangered Northern Spotted Owl. The steady rush of the Hoh River rounding the shoulder of Mount Olympus whooshes nearby, and summer snowmelt punctuates the setting with staccato droplets. In spite of the natural sound, dense forest engulfs the inch in a hush that is, at times, below 20 decibels—quieter than most recording studios.
The recording is presumably normalized to make it sound much louder. Don't think I could sleep through that boid.
The photo, taken by Hempton, is of a red pebble he left at the quietest spot.