On August 31, 1877, a band of Nez Perce, led by Chief Joseph and others, moved north out of Yellowstone National Park near present-day Gardiner, Montana. This movement was a critical phase of their arduous flight toward Canada, seeking refuge from pursuing U.S. Army forces during the Nez Perce War.

Their passage through the newly established national park had been marked by brief encounters with tourists and continued evasion of military patrols. Exiting the park, they entered the rugged terrain of the Absaroka Mountains, facing challenging conditions and the constant threat of attack.

This strategic maneuver demonstrated the Nez Perce's remarkable resilience and navigational skills as they sought to outmaneuver their pursuers across vast and unfamiliar landscapes. The event is a poignant chapter in the broader narrative of the Nez Perce War, highlighting the desperate struggle of indigenous peoples to maintain their freedom and way of life in the face of relentless military pressure and westward expansion.