Who named the Landscape Arch?

Context: The arch is among many in the Devils Garden area in the north of the park. Landscape Arch was named by Frank Beckwith who explored the area in the winter of 1933–1934 as the leader of an Arches National Monument scientific expedition. The arch can be reached by a 0.8 mi graded gravel trail.

Answer: The landscape arch was named by Frank Beckwith who found the arch by exploring the area in the winter of 1933-1934