Description: We were recently in Indian Echo Caverns, three miles west of Hershey, Pa. We took pictures of the caverns as we entered, and to our surprise we found that we have quite a few of what looks like "orbs." There were no lighting fixtures at the entrance of the cave, so we have ruled that out. At first glance, they look to be lights, but upon enlarging the picture, we noticed that they are almost transparent.