This pulp novel, originally published in 1935, was a first science fiction book for alot of people and, though I doubt it stands the test of time as a great literary classic, it is remembered fondly. The plot in a nutshell: A human male goes underground (on the Moon?) where he encounters a matriarchal society of pale people who've never seen the light of day. It was cheesy and funny and opionated. Recommended if you enjoy reading early pulp science fiction.