Freddy Silva is one of the world's leading experts on crop circles and sacred space, and best-selling author of Secrets in the Fields: The Science and Mysticism of Crop Circles, hailed by many as the most comprehensive book ever written on this fascinating and multi-disciplinary phenomenon.

He is a researcher, international lecturer, and a life-long student of Earth Mysteries, ancient systems of knowledge, and the interaction of sacred space with human consciousness.

Freddy has appeared in TV documentaries for The History Channel, Discovery Channel, BBC, as well as numerous video documentaries, and guested on radio shows throughout the world.

Jaime Maussan and Santiago Garza investigate and show some of the most advance crop circles ever seen and explain what they mean...

Hidden messages in crop circles - Explained