"Arqtiq: A Study of the Marvels at the North Pole" by Anna Adolph is a feminist utopian adventure novel published in 1899. A woman inventor creates a hybrid aircraft and flies to the North Pole with her companions. There, beneath the ice, they discover a hidden crystal city inhabited by the Arq—a technologically advanced, telepathic people who practice gender equality and Christianity. This eccentric work blends science fiction, lost-world adventure, hollow Earth mythology, and religious themes into an exuberantly unconventional tale. (This is an automatically generated summary.)