Zip! at Haile Quarry, featuring Florida's longest zip line, is opening near Newberry, Florida. The park, built in an abandoned limestone quarry, offers a two-mile zip line course with six lines, ...

This was not a typical day at the office. Standing at the edge of a nine-story tower on a late Wednesday morning, I squinted across a vast chasm of sunlit sandstone and limestone. A cable hardly wider ...