Phone lines for all four national parks in the state went straight to voicemail, directing callers to visit the park's website for more information. The automated voicemail for Black Canyon of the Gunnison National Park stated that “this phone line is unavailable due to the lapse in appropriations.”Elizabeth Kriebel had been camping in Great Sand Dunes National Park since Sunday. However, cultural sites such as cliff dwellings, the park’s visitor and research center, and the park’s museum are closed. “I have repeatedly called on the federal government to keep National Parks open, especially during the busy fall tourism season,” Polis said. The National Park Conservation Association is also urging people to tell Secretary of the Interior Doug Burgum that national parks should remain closed.