Authorities are investigating the disappearance of an 81-year-old hiker who was last seen at the trailhead of Waterton Lakes National Park.The individual, whose identity has not been disclosed, is believed to have embarked on a solo trek in the area.Parks Canada and local emergency services are coordinating efforts to locate the person, with search teams deployed to the rugged terrain.The incident highlights the risks associated with hiking in remote national parks, particularly for elderly individuals.Weather conditions and trail difficulty are being assessed as potential factors.While no immediate threats have been reported, officials urge hikers to carry essential supplies and stay within designated paths.This case underscores the importance of preparedness and emergency response protocols in wilderness areas.