Check in to get away: Zion park aims to require reservations

SALT LAKE CITY — It would be a first for a U.S. national park: requiring reservations to get in.But it's an option Zion National Park officials are considering to manage an overwhelming surge of visitors to the sweeping red-rock vistas and canyons in Utah.Zion, which welcomed 4.3 million people last year, is weighing online reservations for those who want to explore its main canyon. National Park Service rangers struggle to cope with overcrowded tour buses and alleviate damage to Zion's na