HistoryPetrified Forest National Park is located in the Painted Desert in northeastern Arizona, occupying 93,532.57 acres of land. Before the national park was established, it was established as a national monument on December 8, 1906 when President Theodore Roosevelt signed the proclamation. Years later, Congress passed a bill and established it as a national park on December 9, 1962. Centuries before Petrified Forest National Park was preserved as a national park, the land was occupied by the Paleo people. At the beginning of the end of the last ice age, hunter-gatherers, people who lived by hunting game and gathering only edible plants, roamed the Southwest from 13,500 to 8,000 BC. Although these people enjoy meals consisting of meat and vegetables, they do not do so. t raise livestock and grow crops. During these years of hunting and gathering, the region was cooler with a prairie environment, and people gathered wild plants for food and hunted bison and other large herds of animals. The types of bison that these people hunted are now extinct. Nomads used a device called an atlatl to throw their weapons, such as spears and darts, to hunt. Around 4000 BC, during the Archaic culture, the climate had changed and become similar to today. This period of hunting, gathering, and farming lasted from 8,000 to 500 BC. Unlike the times of Paleo people, the climate was warmer, people expanded their access to different types of foods, and people began to grow and cultivate their crops. . Due to past animal extinctions, people had to expand their food source and include many different species of plants and animals in their meals. Two hundred and twenty-five million years ago, trees fell and were washed...... middle of paper...... the Dry Wash also joins the Puerco River, but on the contrary, the Dry Wash joins the river from the left side of it. Unlike any of these washes, the Digger Wash does not converge with the Puerco River. Another type of relief is the river. Rivers are large natural streams that flow in a channel to the sea, lake or other body of water. A river that runs through the Petrified Forest National Park is the Puerco River. The Puerco River is the principal tributary of the Little Colorado River and flows through an area of ​​approximately two thousand six hundred and fifty-four square miles. It is one hundred and sixty-seven miles long, and because its watershed is extremely dry, its average flow rate is low, less than seventy cubic feet per second. For most of the year the river is a wash containing little or no water at all. However, flash flooding may occur during heavy downpours..