Yellowstone National Park is extending the length of time the public can comment on a proposal to increase the park’s entrance fees and institute a backcountry overnight permit fee.

In response to public requests, the park will also open up the opportunity for interested individuals to submit comments online.

Yellowstone is proposing several changes to park entrance fees, which have remained the same since 2006. The park is proposing to offer a 3-day Yellowstone only pass for $30. A 7-day pass good for both Yellowstone and Grand Teton National Parks would be available for $50. An annual pass to Yellowstone only will be $60.

Additionally, the park is proposing to institute a fee for overnight backcountry permits to help recover costs associated with operating the park’s backcountry program.

The park recently held public open houses in Cody, Jackson, and Bozeman help individuals learn more about the proposed fee changes.

The public comment period has now been extended to midnight MST on December 20, 2014.