Abraham Merritt 
The Moon Pool 

The Moon Pool" by Abraham Merritt is a thrilling novel published in 1919. It transports readers to the mysterious Pacific island of Nan-Matal, where a group of explorers discovers a hidden underground world accessed through a mesmerizing moonlit pool. In this otherworldly realm, they encounter ancient races, powerful entities, and unearth unimaginable secrets. As the protagonists navigate this perilous realm, they uncover a cosmic conflict between forces of light and darkness. To prevent catastrophic consequences, they must unravel the mysteries of the Moon Pool and confront its guardians. Merritt's captivating prose and vivid descriptions immerse readers in a world of enigmatic landscapes and fantastical creatures. "The Moon Pool" is an unforgettable adventure that blends elements of fantasy, science fiction, and supernatural intrigue.