The Bell-mouth spillway or 'plug hole' at Ponsticill Reservoir on the edge of the Brecon Beacons National Park in Wales. Image made with shade 10 welding glass on a FujiFilm X-T1 camera and a Fujinon XF 10-24mm F4 R OIS lens, 1 minute exposure at f11, ISO200.

The Bell-mouth spillway or ‘plug hole’ at Ponsticill Reservoir on the edge of the Brecon Beacons National Park in Wales.

Image made with shade 10 welding glass on a FujiFilm X-T1 camera and a Fujinon XF 10-24mm F4 R OIS lens, 1 minute exposure at f11, ISO200.