Focus on Upright Motive No. 1: Glenkiln Cross and discuss the History.
Moore described how the original idea came from a commission for an Olivetti building in Milan, where he "visited the site and a lone Lombardy poplar growing behind the building convinced me that a vertical work would act as the correct counterfoil to the horizontal rhythm of the building. This idea grew ultimately into the 'Upright Motifs'." 
Between 1951 and 1976, Sir William Keswick, who owned the Glenkiln estate, bought and arranged works by Henry Moore, Jacob Epstein, and Auguste Rodin, creating the world's first collection of sculpture in a landscape setting, Glenkiln Sculpture Park.  Moore and Keswick installed the first cast of the cross on a hilltop, where they saw a shepherd and his flock; Moore said "From a distance it looks rather like one of the old Celtic crosses."
Jacob Epstein Olivetti Lombardy poplar Milan Glenkiln Sculpture Park old Celtic crosses William Keswick Henry Moore Auguste Rodin