The Abyss of Wonders is a science fiction novel by American writer Perley Poore Sheehan.

It was the second and final book published by Polaris Press and included an introduction by P. Schuyler Miller.

The novel concerns a group of people from the US, a young boy along with a Chinese man and an old Russian, who make a spiritual quest to a city of lost race in the Gobi Desert that is technologically advanced through a combination of theosophy and superscience.

Groff Conklin, reviewing the 1953 edition, called it "a fairy tale for youngsters ... written in a kindergarten style that is irritating to most modern readers.

[2] Everett F. Bleiler dismissed the novel as "a curiosity only", describing it as "curiously imprecise and wavery, with a fairytale atmosphere; weakly planned, with many unsatisfactory elements".