This cache is located at the Martinsburg Train Station. Across
the tracks is the Historic Martinsburg Round House. The Martinsburg
Roundhouse is the only iron framed roundhouse still standing in the
world today. 
A roundhouse is a building used by railroads for servicing
locomotives. The Roundhouse is a large circular structure with a
turntable which facilitated access for repair facilities or for
storage of steam locomotives. Early steam locomotives traveled
forwards only and needed a way to turn around.
During the Civil War, Martinsburg changed hands more than 50
times leaving this once-thriving community a desolate wasteland,
unable to feed its inhabitants, much less export anything.
Following the war in 1866, the B&O began reconstruction of
the roundhouse and associated shops that stand on the site today,
which were completed in a span of six years. The facilities were
used until the mid-1980’s when all local operations were
transferred to other locations and the complex has remained vacant
ever since. The facility played a significant role in the history
of the railroad and the city of Martinsburg. It was a major
regional transportation mode and one of the major employers in the
region.
In 2003, the B & O Roundhouse was designated a National
Historic Landmark. This cache was placed by permission of the City
of Martinsburg. Bring your own pen and some lose change, the
parking lot is metered! Look around while you are there; the train
station and the area around it are very nice and full of
history.