In 1842,the Baltimore and Ohio Railroad reached Martinsburg Virginia and Cumberland Maryland. The country would never be the same now that railroads were being run everywhere! The Flagg Family home was just across the tracks to the northeast. Laurel Hill was a brick structure that was already in partial ruin in the 1950's. Further east, a brick plant was partially built in the 1927-1929 era but, as the date implies, Eastern Sewer Pipe and Brick was never made a brick as the depression hit. In winter, you can see a tall water tower from 1927 still standing in an open field which is all that remains of any structure of the plant except for a small shed at a house nearby. Southeast of the crossing, were several residences, an old mill, and OP or Opequon Tower of the B&O.There is safe parking very near the cache and CAUTION is suggested as this is a very busy road! A quick grab n' go but level is a bit higher due to traffic and intense mobile muggles speeding to get to work or home. Stay away from the tracks, park on the pull off on the west side of the road. The rest should be apparent.