Opar (fictional City) - in Burroughs

In Burroughs

Opar is located deep in the jungles of Africa. Portrayed as a lost colony of Atlantis in which incredible riches have been stockpiled down through the ages, the city's population exhibits extreme sexual dimorphism caused by a combination of excessive inbreeding, cross-breeding with apes, and selective culling of offspring. Consequently, female Oparians appear perfectly human, while male Oparians are apelike brutes. The ruler and high priestess of the city is Queen La, who on her first encounter with Tarzan falls in love with him, and subsequently carries a torch for him. Tarzan, already committed to Jane Porter, spurns her advances, thus endangering his own life, as the religion of Opar condones human sacrifice. Yet he returns to the lost city time and again to replenish his personal wealth from its hoarded treasure.