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What is at the bottom of the Potomac?

Posted on 14 July 2008

Can you identify this underwater structure?

Recently, I was looking at an aerial view of the Potomac river near Riley's Lock in Gaithersburg Maryland. I was looking at the possible navigational hazards when I noticed this weird formation underwater. Looks like there is a barge docked next to it. I looked at a different view, which showed the same structure, without the barge/boat.

If the image is still available you can link to it Microsoft maps

Does anyone know what it is?

  • Water intake/discharge for the golf course ponds.
  • light house foundation
  • a piece of alien aircraft

If you think you know what it is, Use the Contact Page


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