The lights mark the border between forest and manicured athletic fields. In real life, crossing the border means risking ticks and perhaps a run-in with a deer; in the realm of science fiction, I can imagine much more terrifying consequences from crossing the border from light into darkness as the sun sets.
Decaseconds 
Stunning image and the description fits nicely as well..
Thank you! The shot cost me quite a few mosquito bites in the process, but I think it was worth it.
Yes, it was worth it but next time bring mosquito repellent.