Figure 1: This sign, posting cave access restrictions at Clifty Falls State Park in southern Indiana, is the Indiana Department of Natural Resource's response to the lethal threat posed by White-Nose Syndrome to various cave-inhabiting bat species. Similar efforts to restrict human access to bat-inhabited caves and sinkholes have been initiated by the U.S. Fish and Wildlife Service and other state Departments of Natural Resources. Although not yet confirmed, reasonable concerns have arisen from these agencies that spores or hyphae attached to cave visitors' clothes may further spread the fungus to bats in uncontaminated caves. These concerns are the impetus that has prompted the cave closings.
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