My first encounter with fireflies was quite comical.
We were on an overnight caving/camping trip at Colong Caves. We were around the campfire and talking and I noticed some lights up the gully. We thought some bushwalkers were coming down the gully. The flashing was not unlike lights moving behind trees. But as they got closer, the number of lights got more and more, and they seemed to be getting closer, but we couldn't hear any movement or noise from people walking through the bush...
I remember looking at one of my mates on the other side of the fire, and he'd just been looking at the lights and I asked him "Can you see that?"

What a stupid thing to ask really...
It was a bizarre enough experience that we were quite on edge until we saw what it was.

They are great! They occur in the gullies around Colong Caves during November. Since that first time we hav organised 2 other caving /camping trips to Colong during November and each time we've seen the fire flies. Never seen them any other time of year though.
Thanks for sharing Alex!
Al.