Shetland's biggest annual fire festival takes place on the last Tuesday in January. 

Lerwick Up Helly Aa is a Viking-themed holiday that includes a series of marches led by the Guizer Jarl, or Chief Guizer. 

Gathering torches the Guizers and the the Jarl Squad, a large squad of Vikings, will end the evening with a spectacular procession that cumulates in the burning of the Galley. 

The name and for the event was first coined by a group of intellectuals in 1870. The introduction of Viking themes first appeared in 1877, but it was not until the late 1880s that a Viking longship – the Galley – appeared, and as late as 1906 that the first Guizer Jarl appeared. 

Up until the Second World War, Up Helly Aa was overwhelmingly a festival of young working class men but this year, for the first time, guizers will have no gender restrictions.