Security ... think about it!
At Mammoth Cave National Park, for example, it's not certain whether the new law means guns will be allowed inside the park's cave — known for its gypsum lined passages, narrow canyons, large rooms, and dripstone formations — or in the park's visitor center and staff offices, or whether they'll only be allowed in campgrounds, or on roads, trails and in the backcountry of the 82-square-mile natural and historical preserve 75 miles south of Louisville. That's because federal attorneys are still sorting through legal issues, including how the new law can work with an existing general ban on guns in federal facilities.