Besides the rock formation that spells out “CLU” atop Mount Clef Ridge, a cross is located immediately east from the landmark letters on the hilltop. The 30-foot tall cross is made from old telephone poles. This site on Mount Clef is known as Dr. Rudy Edmund Living Laboratory and was dedicated on May 5, 2003, in order to enhance student research in biology and geology. The trailhead is found at the north end of Mountclef Boulevard (corner of Mountclef Blvd. and Magellan Street).