During the dark days of winter cathedrals become places of deep shadows. Only on the bright, cold, sunny days do the clear and stained glass windows admit sufficient light to illuminate the beauties of the mason's and sculptor's art so that it can be appreciated. However, most cathedrals do manage internal lighting at these times, and some use it better than others. Hereford Cathedral has a number of lights that show off arches and column capitals, and these pools of artificial light often compensate for what daylight isn't able to offer, as the photograph above shows.
photo © T. Boughen Camera: Lumix FZ1000 2