Petrified Forest National Park By Paxton Newbold 225 BCE Before the trees were petrified 60 BCE After they were petrified 1418 Native Americans in the park started making trails 1843 When it was discovered Dec 8, 1906 It was established as a national monument 1955 People reported on the national park Jan 1, 1962 The national monument was open to the public Dec 9, 1962 It was established as a national park 2004 The national park extended the amount of land they owned Mar 2, 2016 People paved the paths that Native Americans made
