The park's inclusion is driven by 'last-chance tourism' as its glaciers rapidly shrink, leading to severe congestion, increased litter, and disturbance to wildlife.
Environmental issues cited include heightened carbon emissions impacting air quality and trail congestion, making maintenance difficult and rescue efforts challenging.
Michael Jamison of the National Parks Conservation Association highlighted a significant disconnect between the urgency to see natural wonders and the environmental damage caused by surges in visitor numbers.
Fodor's clarified that the 'No' list is not a call for boycotts but a recommendation for temporary restraint, encouraging visitors to consider alternative destinations from its 'Go' list instead.