In a long-exposure photo, the interior of Salisbury Cathedral is illuminated by trails of candles carried by choristers during the annual “darkness to light” advent procession in Salisbury, England, on November 25, 2011.

The service – which begins with the medieval cathedral in total darkness and silence before the Advent Candle is lit at the West End -is one of the most popular services of the liturgical year. The annual advent service, which takes place over three nights, is a mix of music and readings during which two great candlelit processions move around the different spaces in the 750-year-old building which, by the end, is illuminated by almost 1,300 candles and is a spectacular start to the Christmas season. [Source]