The White Nose Syndrome is a fungal disease that kills bats. It has been spreading further west in the last 10 years, and it's even made it's way to the Tower Soudan Underground Mine
We've talked previously on air and even in my blogs about the Tower-Soudan underground mine. Last time my family and I visited in 2013 we had to walk across a special mat that was too remove any fungus spores from our shoes.