Not necessarily my best photograph but probably my most unique photograph from this past summer.
Taken at Warsaw Caves Conservation Area (northeast of Peterborough, Ontario) while on a Scout camping weekend. We arrived Friday evening and I have not seen so many fireflies in well over 30 years, so I planned for this shot on the Saturday night. I had a spot all picked out with a trail winding through an open meadow, and a northerly facing with open skies. Probably about a half-hour before sunset the Scouts announced that they were self-organizing a game of capture the flag, and where else but the same area I was planning to shoot.
As camera + tripod + Scouts + running + dark = disaster, I had to quickly identify an alternate location in waning light and set up.
This is an 84 minute exposure, comprised of about 168x30 second exposures all blended together in Photoshop.