About the Author

Matthew LaCroix is an author, researcher, documentary filmmaker, and Mystery School teacher dedicated to exploring humanity’s forgotten past, ancient wisdom, and consciousness. For more than two decades, his work has focused on lost civilizations, megalithic architecture, symbolic traditions, ancient texts, and the recurring knowledge systems preserved across cultures.

His research has taken him throughout Türkiye, Egypt, Cambodia, Peru, Bolivia, and beyond, where extensive field investigations have revealed remarkable parallels in sacred architecture, advanced stonework, and symbolic traditions that continue to challenge conventional understandings of history.

Matthew is the author of The Missing Key: Ancient Code of a Lost Civilization, along with several previous books, and has appeared in documentaries and television series including Ancient Civilizations, Beyond Belief, and The UnXplained. Through documentary filmmaking and international expeditions, he continues collaborating with researchers and field experts to document new archaeological discoveries around the world.

Today, his work extends beyond research to include education, preservation, and public exploration. He is the founder of the Lost Civilizations Database (LCD), a global initiative dedicated to documenting, comparing, and preserving some of the world’s most significant archaeological evidence connected to humanity’s forgotten past.

Through the Ayanis Legacy Mystery School, Matthew teaches courses exploring ancient wisdom, consciousness, philosophy, and personal transformation while encouraging curiosity, critical thinking, and lifelong learning.

Everything he does is guided by one mission: To explore humanity’s forgotten past and help restore ancient wisdom for future generations.