What's your favorite outdoor quiet place?
Here's a list of 10.
The quietest place I've ever been to was Lava Beds - in Northeastern California. Absolute silence.
Another one would be the Badlands (South Dakota).
Death Valley is quiet in the backcountry but there are occasional flybys from aircraft from China Lake NAS and/or Nellis AFB.
In the SF Bay Area, there are surprisingly quiet and untouched spots in the forest just on the other side of Santa Cruz Mountains, between the crest and the beach. You would never think there is a major metropolitan area just a few miles away. A high-flying plane might be the only sign of civilization