sentences:  At the beginning of the adventure, the characters become lost in a desert sandstorm and stumble upon the entrance to a pyramid.The pyramid and the underground city beneath it are located on the site of the ancient ruined city of Cynidicea and inhabited by the descendants of the city's people.These Cynidiceans, now regressed to a subterranean species, are addicted to narcotics and spend most of their time in drug-induced reveries, wandering around in costumes and masks.