You searched for: Institution University of Michigan. Libraries Remove constraint Institution: University of Michigan. Libraries Place Fairfax Remove constraint Place: Fairfax Place Potomac River Gorge, Great Falls Park, Patowmack Canal, lock one, along western berm of Matidaville Trail. Remove constraint Place: Potomac River Gorge, Great Falls Park, Patowmack Canal, lock one, along western berm of Matidaville Trail. Place USA Remove constraint Place: USA Place Virginia Remove constraint Place: Virginia Type still image Remove constraint Type: still image