Once while riding through west Texas on I-10, I got off the interstate and crossed under one of those single lane tunnels under the road to take a picture of some of the mountains in the distance as the sun was setting. I noticed it smelled kinda bad in the tunnel but didn't think much of it. Then as I go back through the tunnel to get back on the interstate, the cieling started to move, and much to my surprise, several dozen bats woke up and swarmed all around me.
After tucking under the screen and blasting out of the rapidly filling tunnel, I couldn't help but laugh. "We can't stop here! This is bat country!" :mrgreen: