• In this Wednesday, Aug. 19, 2015 photo, visitors line the South Rim of Grand Canyon National Park in northern Arizona. The Grand Canyon and other big national parks are seeing more visitors than usual this year, partly driven by good weather, cheap gas and marketing campaigns. (AP Photo/Felicia Fonseca)

    National parks seeing huge spikes in visitation this year

    GRAND CANYON NATIONAL PARK, Ariz. (AP) — Visitors heading to the Grand Canyon lately know they are going to get two things when they arrive: breathtaking views and long waits, whether it is to get into the national park itself or to find a parking spot inside. A few frustrated tourists have even turned around and left.