Mount Ellen is a mountain located in Garfield County, Utah, United States.Mount Ellen is an ultra prominent peak, meaning that it has more than 1,500 metres (4,921 ft) of topographic prominence, standing out considerably from nearby mountains.After climbing to the summit in June 1872, Almon Harris Thompson named it for his wife Ellen.[6] Over several days beginning on September 10, 1895, a detachment of the U.S. Army Signal Corps established the world heliograph record from stations atop Mount Ellen, Utah and Mount Uncompahgre, Colorado.[4] The record for visual signaling was established utilizing mirrors 8 inches across and telescopes.