Barbed wire along the edge of a field on Valentia Island is knotted to make sure the barrier holds.
I remember hearing a podcast about the use of barbed wire in the US, how, in the 19th century, it helped white farmers control herds and easily fence their territories.
The wikipedia page is quite interesting.
Aperture | ƒ/8 |
Camera | ILCE-7M3 |
Focal length | 105mm |
ISO | 125 |
Shutter speed | 1/200s |