Eon Mountain is located on the border of Alberta and British Columbia on the Continental Divide.

[1][2] The first ascent of Eon was made on July 17, 1921, by Winthrop E. Stone, then President of Purdue University, who fell to his death shortly after reaching the summit.

Upon returning to the chimney he stepped on a loose stone near the edge and fell.

On August 5, a five-man recovery team ascended the SE arête to retrieve Stone's body which was located some 850 ft (260 m) below the summit.

The mountain is composed of sedimentary rock laid down during the Precambrian to Jurassic periods.