A hand operated water pump on the farm of Jacob Hummelbaugh on Taneytown Road within the Gettysburg National Battlefield.  During the Civil War battle that raged on here July 2nd and 3rd, 1863, the farm was setup as a 2nd Corps field hospital.  

Technical details:
Busch Pressman Model D 4x5 large format press camera.
Graflex Optar 135mm F4.7 lens in a Graphex shutter.
Yellow # 8 series VI filter on lens.
Ilford FP4+ B&W film, shot at ISO 125.
Exposure was 1/125th second at F16.
Developed in Rodinal/Adox Adonal 1:50 dilution for 15 minutes @ 20 degrees Celsius in Mod54 daylight developing tank.   
4x5" negative scanned with Epson V600.