Get Into All US National Parks for Free on April 19

Getting into a National Park for free will be appealing to many so be sure to head out early to avoid the crowd.

Geysers are plentiful in Yellowstone National Park, first national park ever formed and which straddles Idaho, Montana and Wyoming. Pongpol Wathakul/Dreamstime/TNS

By Marla Jo Fisher The Mercury News

Want to get outside and enjoy nature for free?