William Dunn carved his name at the top of the mountain here after he and the Howland brothers left the Powell expedition in 1869. All were probably killed by Mormons shortly after although it has been argued as to whether they were killed by Indians or Mormons.

Powell Geographic Expedition of 1869

The Powell Geographic Expedition was a groundbreaking 19th century U.S. exploratory expedition of the American West, led by John Wesley Powell in 1869, that provided the first-ever thorough investigation of the Green and Colorado rivers, including the first known passage through the Grand Canyon. The expedition, which lasted approximately three months during the summer of 1869, endured hardships and dangers down the river but resulted in the discoveries of many new natural features in the Colorado Basin. In 1875, Powell published a classic account of the expedition (combined with elements from later expeditions in 1871-72) called Report on the Exploration of the Colorado River of the West and Its Tributaries, re-issued and revised in 1895 as The Exploration of the Colorado River and Its Canyons.

• http://en.wikipedia.org/wiki/Powell Geographic Expedition of 186
• Dolnick, E., 2001, Down the Great Unknown: John Wesley Powell’s 1869 Journey of Discovery and Tragedy Through the Grand Canyon: HarperCollins Publishers, New York, 367p.
• http://www.trucktrend.com/features/travel/163_1008_arizona_parashant_national_monument/mt_dellenbaugh_and_toroweap_overlook.html#ixzz243TkU3ys