Martin Roest
Packrats are often seen near the historic cave entrance.
Over 1,000 bats use Jewel Cave as a winter hibernaculum, and some stay into the summer. Many packrats also make the cave their year-round home. They can sometimes be seen on the Lantern Tour.
Springtails are small insects that can be found near the historic entrance and around the Scenic Tour route. Deep in the cave, only protozoa and other microbes are able to survive, because of the lack of food. In fact, almost all cave life at Jewel Cave is found near the entrances, because there is no natural mechansim for carrying organic material deeper into the cave.