The night celebrates a procession of weird and wonderful characters awakening from their winter sleep around the hill; and the lighting of a huge bonfire by the incarnation of summer, the May Queen, and her counterpart the Green Man.
"The Green Man represents the death of winter and the birth of summer," explains Will Ferguson, who will take on the role for the first time this year.
"He starts off as the horned god, and goes through a transitional phase as he enters through the fire arch – and is reborn as the king of summer."
"To the community, I will be attempting to portray him as the carrier of everyone’s burdens, but also of their hopes and dreams too," adds Will.
"It’s the time of year to cast off all the negative things that we don't want anymore and carry through our hopes for the future instead – The Green Man carries all this for them, and as he dies, people’s sufferings die with him and he helps carry their dreams forward.