The Hogmanay torchlight procession is a well-known New Year's Eve tradition in Edinburgh, Scotland.
Edinburgh's Hogmanay is a multi-day celebration whose events have included a large torchlight procession through the city. Participants carry flaming torches in a dramatic procession associated with welcoming the new year and marking the transition from the old one. The event's route and arrangements can change between editions.
“Hogmanay” itself is the Scottish word for New Year's Eve, so the term is not exclusive to Edinburgh. The city is identified here because Edinburgh's public festival and torchlight procession became especially famous internationally. This question also differs from asking for the name of Scotland's New Year's Eve: Hogmanay is the broader Scottish term, while Edinburgh is the specific city hosting the celebrated procession.