National parks to limit free days for visitors

National parks to limit free days for visitors

FILE - In this Aug. 3, 2016, file photo, a large bison blocks traffic as tourists take photos of the animals in the Lamar Valley of Yellowstone National Park in Wyoming. National parks in the U.S. will sharply drop the number of days it allows visitors to get in for free. After waiving entrance fees for 16 days in 2016 and 10 days in 2017, the National Park Service announced Tuesday, Dec. 12, 2017, that it will have four no-cost days next year. (AP Photo/Matthew Brown, File)

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