Spend your time in port in ketchikan on an exhilarating zipline tour during this shore excursion to tongass national forest youll soar above a dense canopy of trees at heights up to 135 feet 41 meters in the air cross three suspension bridges and look down on salmon spawning streams and tidal estuaries as you zoom across 6 000 feet 1 830 meters of dual cable ziplines youll have the chance to spot wildlife like black bears and bald eagles this advanced zipline course is limited to nin