It is very quiet here in the mountains. One thing you don't hear is aircraft noise,
mainly because we don't have an airport.
You do see planes flying over...mind you I said see , not hear. They are usually so high you can't actually spot them, but the jet stream behind them. We always try to guess where they are headed..
There is one noisy aircraft I hear going over(once a day), and it is a smaller plane headed from Denver to Durango.