Harney Peak, located within Black Hills National Forest, is the highest mountain in South Dakota, and at 7,244 feet, the highest point in the United States east of the Rocky Mountains. The peak was named after Williams S. Harney, commander of the military in the Black Hills area in the late 1850s. An abandoned fire lookout tower is situated on the summit with a plaque that reads "Valentine McGillycuddy, Wasicu Wacan." The plaque marks the final resting place of Dr. Valentine McGillycuddy (pictured above). Harney Peak is also the place where Black Elk had his "great vision" when he was nine years old.Dr. Valentine (good timing, eh? get it now?) McGillycuddy is famous for being the doctor who treated Crazy Horse at the time of his death. While he is known to the Lakota of the modern-day Pine Ridge Indian Reservation as "Friend of Crazy Horse", he was not so much loved by some other Lakotas, including Red Cloud, a major Sioux chief. Red Cloud's accusations of mismanagement led to several investigations of Dr. McGillycuddy's administration. In the days leading up to the Wounded Knee Massacre, Red Cloud conceded that McGillycuddy had been a "young man with an old man's head on his shoulders." Whatever that means.