Treetops sway gently as birds flutter over their branches, breezes waft around their trunks, and humans careen between them at speeds of up to 40 miles per hour. Mammoth Cave Adventures' series of seven ziplines across two courses trail from tree to tree, each line standing slightly higher than the last as visitors decked out in helmets and harnesses speed across the cables, teeter over two skybridges, and perch on platforms between each lofty tier. Seasoned guides lead the 90-minute excursions as they spout environmental and historical trivia about the rolling hills and dense forest of the 60-acre course, which is located just outside of Mammoth Cave National Park.

The company's new Drop Tower allows guests to experience the scenic view of Mammoth Cave National Park while dangling 70 death-defying feet above the ground. For slower-paced adventures, a stable of gentle equines ferries guests along serene trails and countryside vistas during hourlong horseback rides, which are designed for all equestrians regardless of their skill level or the number of sugar cubes in their pockets.