Alton "Hum"
On March 3rd a low frequency hum started up, and has not stopped since.
I live on a hill near the "floating bandstand" It is as if something has gone on-line, such as a steam plant. The hum pulsates, changes pitch and intensity.
It seems to be louder indoors as if travelling through the ground.
We have driven to different locations in Alton such as near Prospect Mt., the Christian campgound and even Gilford.
Has anyone else experienced hearing this hum?
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