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Short section of track in cages
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Largo interlocking
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Tunnel portal outside Addison Road station
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Harsco utility vehicle
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Kershaw railroad crane
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Runway at College Park Airport [01]
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Runway at College Park Airport [02]
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Simplex fire alarm horn at Laurel Safeway
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Edwards fire alarm pull station at Laurel Safeway
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Intersection of Trumps Hill Road and Crain Highway
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Chemistry building corridor at the University of Maryland [01]
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Chemistry building corridor at the University of Maryland [02]
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Dirt graffiti
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One-way aisle arrow