Country’s largest national parks hit visitation records

FLAGSTAFF, Ariz. (AP) — Many of the country’s most prominent national parks, including Grand Canyon, Yellowstone and Zion, set new visitation records in 2015 and are bracing for what could be an even busier new year.
The National Park Service celebrates its 100th birthday in 2016 and has been urging Americans to rediscover the country’s scenic wonders or find new parks to visit through marketing campaigns that include giving free passes to every fourth-grader and their families