This is one of the most famous sandstone buttes in America, and bears the only remaining physical evidence of the Lewis and Clark expedition. It appears on the trail today just as it did 200 years ago.

FACT CHECK: We strive for accuracy and fairness. But if you see something that doesn't look right, click here to contact us! HISTORY reviews and updates its content regularly to ensure it is complete and accurate.

RELATED CONTENT

This Day in History - May 14, 1804, Louis and Clark started their journey west from St. Louis, Missouri to the Pacific Ocean. They traveled 8,000 miles by the end of their journey and set the stage for the great western migration. To find out more about the discovery of the west, check out this video.

In a December 9, 1999, press conference, Gen. Wesley Clark, supreme Allied commander of NATO, highlights growing tensions in Montenegro four years after the Dayton Accords and the deployment of NATO forces in the Balkans.

Inspired by Martin Luther King Jr., John Lewis joined the burgeoning Civil Rights Movement. Lewis was a Freedom Rider, spoke at 1963's March on Washington and led the demonstration that became known as "Bloody Sunday."

Former banker and hydrogen bomb champion Lewis Strauss addresses the U.N. on nuclear energy. Strauss was appointed to the U.S. Atomic Energy Commission (AEC) in 1946 and served as its chairman from 1953 to 1958. In September 1956 U.N. delegates gathered to approve a new international atomic energy agency.

When the United States was thrust into World War II in 1941, it wasn't just anonymous Americans who answered the call to service. Many of Hollywood's finest volunteered for the war effort, along with numerous musicians and professional athletes. Hollywood director Frank Capra made films for the U.S. government, including the seven-part Why We Fight (1942-44), designed to explain the war to servicemen and civilians alike. Yankee star Joe DiMaggio and boxing heavyweight champion Joe Louis gave morale-boosting demonstrations to U.S. Army troops around the world. Big-band leader Glenn Miller led the U.S. Army Air Force band in Europe and gave his life to the war when his plane went down in the English Channel. Hollywood stars Clark Gable and Jimmy Stewart both served in the U.S. Army Air Corps, dividing their time between appearances in military documentaries and actual combat. Gable, who decided to enlist after his wife was killed in a plane crash returning from a war-bond drive, served with distinction, participating in several bombing raids over Nazi Germany, rising to the rank of major, and receiving the Air Medal and Distinguished Flying Cross.

Over 400,000 people travel West to start a new life and claim new land along the Oregon Trail, including Lucinda Brown. One-hundred seventy years later, one of her descendants sees a kettle from her journey for the first time.