Thousands of people have headed to an area in the western United States to search for a hidden treasure. A wealthy art collector and businessman from the area named Forrest Fenn says he hid the treasure. The searchers follow nine clues from a poem that Fenn wrote. They consider the poem their “treasure map.” The treasure hunters believe the prize could be hidden in a huge area that starts in New Mexico and stretches all the way to the northern state of Montana. The area covers a distance of about 2,000 kilometers. Many believe the treasure is real. Others, however, think it likely does not exist. An estimated 350,000 hunters from around the world have come to the area seeking the treasure.