If you go for a winter hike in Canoe Creek State Park , east of Holidaysburg, you won't see any bats. But they're there . . . ! Deep inside an abandoned mine, tens of thousands of bats sleep away the Pennsylvania winter. Their beauty rest is mostly undisturbed. But every few years, biologists from the Game Commission venture inside to get a bat head count. This winter, WPSU's Cynthia Berger tagged along