Grand Canyon was already very old when the first humans arrived thousands of years ago. There were small groups of people whose use of this area had little impact on the canyon compared to that caused by the millions who have come to Grand Canyon during the last 100 years. In this lesson students create and interpret a visual representation of some of the events in human history that have occurred at Grand Canyon. At the conclusion of the lesson, students will be able to give examples of archaic, pioneer period, and contemporary human activities at the canyon.