Pike Expedition
On November 15, Pike recorded the first sight of the distant mountain he called "Grand Peak". It has since been called Pikes Peak in his honor. Pike tried to climb the peak, hoping to get a view of the surrounding area to record on maps, the 14,000-foot summit. Pike's group ascended a lesser summit nearby—likely Mount Miller, which was named for Theodore Miller, one of the soldiers who accompanied Pike. With winter threatening, Pike pressed onward up the Arkansas, and on December 7 the party reached Royal Gorge, a spectacular canyon on the Arkansas at the base of the Rocky Mountains.
Zebulon Pike
Zebulon Montgomery Pike (January 5, 1779 – April 27, 1813) was an American brigadier general and explorer for whom Pikes Peak in Colorado was renamed (from El Capitan). As a U.S. Army officer he led two expeditions under authority of third President Thomas Jefferson through the new Louisiana Purchase territory, first in 1805-06 to reconnoiter the upper northern reaches of the Mississippi River, and then in 1806-07 to explore the Southwest to the fringes of the northern Spanish-colonial settlements of New Mexico and Texas. Pike's expeditions coincided with other Jeffersonian expeditions, including the Lewis and Clark Expedition (1804–1806) and the Thomas Freeman and Peter Custis expedition up the Red River (1806).