A watchdog group for the National Park Service cautions that the cuts could translate to a loss of $110 million that could touch every single park across the country.
In some areas, where health and safety may be compromised access to certain areas could be shut off.
Planning documents indicate that at Kaloko Honokohau National Park on the Big Island a freeze on seasonal hiring would affect key fencing maintenance which could block access to trails that effect 500 visitors a day.
There could also be similar impacts to other popular neighbor island attractions like Volcanoes National Park, and at Haleakala on Maui.
But until Congress acts, the contingency plans for all the parks are just that-- a big "what if."
"We will make any information available as soon as we have it," said Martinez.