The Eternal Cycle Hypothesis explores the rise, fall, and rebirth of civilizations through a cosmic and spiritual lens. From the ancient Brotherhood of Göbekli Tepe to the dark age still ahead, this essay reveals the deeper rhythm shaping humanity's past, present, and future. Drawing on lost memory, sacred sites, and the idea of Deep Formation Periods, Claus Geruschkat presents a visionary hypothesis that challenges official history and exposes hidden truths. This is not a call to save the system, but to preserve soul memory for those who come after. A must-read for seekers, researchers, and those awakening in a time of collapse.