Thread: Glowing arrows

I was walking in the dark back to camp down a rough track a week or so ago (carrying venison ) I saw a weird green light shinning just off the track. A quick investigation revealed an broad head arrow stuck in a tree. The end, behind the feathers (fletching? notch?) was glowing very strongly with a bright green light. Pretty cool. I assume this is to help find you arrow after you fire it....? How long does it glow for? Track hadn't been used for a week or so judging by the foot prints. What powers it? stored UV?

This rifleman has no idea about any of this stuff.