The Orange and Alexandria Railroad was an important freight railroad that began operations in 1851. It was of particular significance during the Civil War. This is what’s left of part of its route: a train tunnel under Wilkes Street used now only by pedestrians and cyclists.
A plaque near the tunnel entrance shows the roundhouse and an engine in 1863.
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Alexandria Daily Photo 
What an interesting tunnel! I love the stonework going up to the opening there on the left. It really looks very, very old.
Nice picture and the stone enterence is neat. I like the color and texture.