04 - Face in the Abyss by Abraham Merritt

Face in the Abyss is a thrilling tale of lost civilizations, ancient magic, and supernatural forces deep in the Andes. When Nicholas Graydon stumbles upon the hidden world of Yu-Atlanchi, he is drawn into a conflict between mysterious rulers, an eerie Snake Mother, and the deadly power of the Abyss. A mesmerizing blend of adventure and the unknown.