Barn door detail on the main barn at Hopewell Furnace National Historic Site in Elverson, Berks County Pennsylvania.

Technical details:
Sakai Toyo 5x7" large format metal field camera with 4x5" film back.
150mm Caltar-S II F 5.6 lens in Copal BT shutter.
Ilford HP5+ B&W film, shot at ISO 400.
1/2 second at F22.
Developed in Ilford DD-X 1+4 dilution for 7 minutes and 20 seconds @ 20 degrees Celsius using a Beseler 8x10 print drum placed on Unicolor Uniroller 352 auto-reversing rotary base.
4x5" negative scanned with Epson V600.