The National Park Service declared that Mount Doane in Yellowstone National Park would henceforth be known as First Peoples Mountain.

According to the EPA, the first national park in America had a “offensive name” that was changed.

The US Board on Geographic Names upheld the ruling with a 15-0 majority.

Located 10,551 feet east of Yellowstone Lake is the Wyoming mountain.

Previously, the peak had the name Gustavus Doane in honor of the explorer.

Doane was born in Illinois in 1840, raised in California, and attended the University of the Pacific in Santa Clara before joining the Second Massachusetts Volunteer Cavalry’s “California Hundred,” a federal volunteer force.

A mountain in Yellowstone National Park that was named for a US Army colonel who assisted in organizing a killing of Native Americans has had its name changed by a government tribunal.Matthew Brown, File/AP Photo

He resigned to obtain an appointment as a lieutenant with the first regiment, Mississippi Marine Brigade, after rising to the rank of sergeant by 1864, according to Montana State University.

In 1867, Doane was named mayor of Yazoo City, Mississippi, following the Civil War.

After a year, he submitted an application for an army commission and was granted a position as a second lieutenant in the US Cavalry.