10 Dangerous Places in National Parks: Photo Gallery by 10Best.com

Huckleberry Mountain in Glacier National Park That sense of isolation you might feel while hiking in Glacier National Park is likely deceiving. With the greatest concentration of bears in the lower 48 states, researchers suspect there's a bear within a 1-mile radius of every backcountry campsite. During the late summer and early fall (huckleberry season), grizzlies descend upon Huckleberry Mountain.