Broad and beautiful Hayden Valley is where today’s visitors are most likely to see herds of bison close to—or on—the road. The valley is named for Dr. Ferdinand V. Hayden, born on September 7, 1829. He played a large role in the creation of Yellowstone National Park.
Trained as a medical doctor at Albany (NY) Medical School, Hayden served as a surgeon in the Union Army until 1865. However, he became interested in geology through collecting and studying fossils in the Dakota Territory and in 1867 began his government-supported geological surveys of the west.
During the summers of 1871, 1872, and 1878, the Hayden Survey studied the Yellowstone area systematically. The men observed and reported on many geological and other phenomena in voluminous reports. The report of Hayden’s first exploration was essential in convincing Congress to establish YNP in 1872.
Hayden’s love of geysers and hot springs reportedly could move him to tears. As an early guidebook writer observed: “He cannot compose himself in the presence of a geyser in eruption; but, losing recollection of the material world for the time, rubs his hands, shouts, and dances around the object of his admiration in a paroxysm of gleeful excitement.”