Hundreds of people may have been exposed to rabies after a suspected bat colony was discovered inside a lodge in Grand Teton National Park in recent months, national park and state health officials warned.

The bat colony was found over the past few months in cabins at the Jackson Lake Lodge, a popular eco-hotel and historic landmark located in Grand Teton National Park, according to the National Park Service. The agency has issued a notice for people who were guests at the lodge between May 5 and July 27.