Bangor, also known as Coopers Gap, Copperas Gap, or Coppers Gap, is an unincorporated community in Blount County, Alabama, United Sta…Bangor, also known as Coopers Gap, Copperas Gap, or Coppers Gap, is an unincorporated community in Blount County, Alabama, United States. Nearby Bangor Cave housed a speakeasy during Prohibition and continues to be a popular attraction for area spelunkers.