Big Bend, one of the largest national parks in the U.S., is now operating with just half the staff it needs. As part of a sweeping decline in staffing across the National Park Service (NPS), the park has lost key personnel this year, including its superintendent, who retired in May, and its chief of interpretation, whose position remains vacant.

Visiting America's national parks, including those in Florida, is about to get more expensive for international tourists. Here's what to know