(Photo courtesy of National Park Service)

Grand Canyon National Park south entrance station.

The National Park Service is looking into raising fees at 17 national parks, including Grand Canyon, Yellowstone and Zion.

The new fees would bring the total at those parks to $70 for a weekly pass, up from $30 now. The Park Service says the higher fees would bring in $70 million a year, which would help pay for deferred maintenance projects in the parks.

Kevin Dahl, Arizona senior program manager with the National Parks Conservation Association, talked about the fee hike.