For nearly twenty years bats flew up the hollow every evening (except when hibernating) around dusk. A couple years ago I realized that I was no longer seeing them and this left me concerned about the spreading bat disease I had been reading about. Late Saturday night, however, I was driving up and out of the hollow when I was happy to see a few bats dipping down into my yellow headlights and grabbing insects before flitting to the darkness above. My hope for them has returned.