Every year, a mysterious group of bicyclists participate in a ritual Christmas tree burning at Golden Gardens Park.Shrouded in secrecy on account of the unsanctioned nature of the fire, photographer Jeremy Dwyer-Lindgren was allowed to tag along on a recent evening to photograph the festivities. Here is what he saw.

​Bicyclists depart from downtown en route to Golden Gardens.

​A tree is heaved on to the fire.

Ignition

Playing with fire.

Playing with fire, Part II