The Green Sky Trilogy is a series of fantasy novels by Zilpha Keatley Snyder, originally published between 1975 and 1978 by Atheneum.
Low gravity also allows Kindar to fall great distances without being hurt and hang-glide through the air using their shuba, a silk cape-like garment something like a wingsuit that attaches at hands and feet.
The Kindar are forbidden from walking on or even looking at the forest floor, and are terrified of doing so from stories of the Pash-shan, monsters trapped beneath a web of vines at ground level.
The Kindar live in a utopian society, free of violence and virtually devoid of negative emotions such as anger or unhappiness.
They are led politically and spiritually by an elite group known as the Ol-zhaan, who live in a private temple and are mostly seen leading rituals or in procession throughout Green-sky.